On this third point much might be said, since it touches upon one of the fundamental doctrines of pedagogical progress. But since this is not a treatise upon scientific pedagogy, it is necessary to limit the exposition to a few fundamental points.

In fact, it will be sufficient to speak of cases in which education is most difficult and where the rewards and punishments are unavailing—for these will include all simpler cases. A luminous example is furnished by the education of new-born infants. Of all human beings they used to be the most troublesome because of the impossibility of educating them by the old-fashioned methods. They cried at all hours of the day and night, making a slave of the mother or whoever took her place.

To-day, babies are quiet; it is marvelous to go through the infant ward in the Obstetrical Clinic of Rome; absolute silence reigns there, and yet if we lift up the white curtains of the cribs, we see the little ones lying with their eyes wide open. A deeper knowledge than was formerly had of the hygiene of the child has enabled us to interpret his needs, and when these are satisfied, the child is tranquil. Bodily cleanliness, liberty of movement, prolonged repose in the crib, and rational feeding have obtained this remarkable result of silencing the baby, of rendering it more robust and of liberating the mother from the slavery of her mission. The classic cry of the child in swaddling bands was a protest against the suffering which ignorance imposed upon him. To-day the little one, lying tranquilly in his crib, begins to exercise his senses earlier and more easily, a ray of light strikes him and attracts his attention, and with this his education has begun, while formerly the suffering due to indigestion kept him for a much longer time a stranger to the external world.

The same thing may be repeated for every year of childhood. Often what we call naughtiness on the part of the individual child is rebellion against our own mistakes in educating him. The coercive means which we adopt toward children are what destroy their natural tranquility. A healthy child, in his moments of freedom, succeeds in escaping from the toys inflicted upon him by his parents, and in securing some object which arouses the investigating instinct of his mind; a worm, an insect, some pebbles, etc.; he is silent, tranquil and attentive. If the child is not well, or if his mother obliges him to remain seated in a chair, playing with a doll, he becomes restless, cries, or gives way to convulsive outbursts ("bad temper"). The mother believes that educating her child means forcing him to do what is pleasing to her, however far she may be from knowing what the child's real needs are, and unfortunately we must make the same statement regarding the school-teachers! Then, in order to make him yield to coercion, she punishes the child when he rebels and rewards him when he is obedient. By this method we drive a child by force along paths that are not natural to him. In the same way, absolute governments employed public entertainments and the gallows, in order to compel the people to act and think according to the will of their sovereign; indeed, they were considered as indispensable means of good government. To-day we have come to realise that such means are more or less adapted to the successful crushing of a people's spirit, but not to governing them well. The reign of liberty, which leaves men the opportunity to give expression to their own powers and above all to their own thoughts, is doing away with festivals and executions; and it is not until this is accomplished that men can be really well governed.

Something similar is going to take place in the schools. But here, since the children are incapable of understanding what they ought to do for their own best good, science studies them in order to assist their natural needs.

I believe that we must greatly modify our ideas regarding infant psychology, as soon as trained psychologists begin to observe the spontaneous manifestations of children, to the end of encouraging their tendencies.

Having applied scientific methods in the "Children's Houses," we were amazed at the behaviour of those little children; for instance, they showed contempt for toys, while they loved objects on which they could exercise their free powers of reason.

Intellectual exercise is the most pleasing of all to the small child if he is in good health. Indeed, we already know that children break their toys in order to see how they are made inside; this shows that the exercise of their intellect interests them more than playing with an object that is often irrational. But children are not, as is generally believed, naturally destructive; on the contrary, their instinct is to preserve. This is seen in the way in which they save little objects that they have acquired by themselves; and in the "Children's Houses," we have also seen it in the way that they preserve unharmed even the most trivial scrap of paper, although free to tear it up, so long as that scrap of paper helps them to exercise their thoughts.

Here we see the great difference between the healthy, normal child who employs himself in the way that pleases him, and is attentive and tranquil; and another child who, equally healthy and normal, is obliged to do what other people wish him to do, and is restless, and troublesome and cries.

To aid the physical development of the child under the guidance of natural laws is to favour his health and his growth; to aid his natural psychic tendencies is to render him more intelligent.

This principle has been intuitively recognised by all pedagogists, but the practical application of it was not possible, excepting under the guidance of scientific pedagogy, founded upon a direct knowledge of the human individual.

To-day it is possible for us to establish a régime of liberty in our schools, and consequently it is our duty to do so.

Whenever a child exhibits anomalies of character that do not signify rebellion against irrational methods of education, and are not expressions of a struggle for liberty, he represents the unhappy effect of some pathological cause, or of some social error, that has only too fatally accomplished its corruptive task.

This is what the biographic history will reveal!

As a general rule, a bad child should be taken to see a physician, because it is almost certain that he is a sick child.

But the treatment of such maladies is very often mainly pedagogical; curative pedagogy, however, must absolutely abolish punishment.

We now know as a fact absolutely established in sociology that the fear of punishment, of torture and even of death does not avail to diminish crime, nor the imperious manifestation of human passions.

Brigandage is not repressed by cutting off heads, but by civilisation in all its forms of industry, intercommunication, etc.

And this principle is especially true in the case of children; harshness of methods and severity of punishment will not avail to inculcate, and still less to create, goodness. Man is conquered through kindness and gentleness; among all the beatitudes, that of inheriting the earth (i.e., of winning over their fellowmen) is given to the meek: blessed are the meek, for they shall inherit the earth.

We know that hypocrisy, adulation and seduction are criminal means by which man seeks to deceive his fellow men to his own profit; but they are based upon gentleness; it would never occur to anyone to seduce and to conquer hypocritically, with the help of violence. Because the weak point in man, that to which he is most susceptible, is gentleness, praise, caresses. We have seen that the psychic stimulus needed to augment human activity, to arouse an apathetic person to action, and even to produce a condition of flourishing growth in a child, is the pleasant stimulus of kindness and caresses. The mother's caress, like the mother's milk, is a means of stimulating the child to a more complete nutrition and vitality. And the entire category of physiological weaklings, such as the defectives, epileptics and criminals, have a proportionately greater need of such stimulus than normal individuals; consequently, how can coercion ever be expected to restore such unbalanced personalities to their proper equilibrium? Those whom we have been in the habit of oppressing with severity and punishment are the very ones most in need of the stimulus of affection. Indeed, it is only the strong man and the hero who can pass unscathed through persecution; the weak are left broken, down-trodden, or slain.

Sursum Corda.—Always strive to uplift, never to depress.

A beautiful theory and a humane idea. But is it practicable, and to what extent? In short, what can be done practically, for instance, in the exceedingly difficult case of juvenile delinquents, in order to correct their evil tendencies and save them from their waywardness, without coercion?

But what are evil tendencies of the mind? With that one phrase we are trying to embrace and ostensibly bind together a quantity of widely different effects.

The study of the individual should suggest to us the particular method of education required by him. Meanwhile, in regard to the question of juvenile delinquents, a wide road leading straight back to first causes, has been opened by the pathological factor. Who, for instance, does not know that the conduct and the sentiments of an individual may become unbalanced through the effects of poison or disease? This takes us at once into the field of nervous or mental pathology: the first symptom of paralytic dementia is not the trembling, or alteration of speech, or interruption of certain reflex actions, or muscular weakness, nor the real and actual delirium. The symptom which first manifests itself as an indication of profound disturbance in the personality of the unfortunate victim of this cruel disease is an almost unheralded alteration of the natural character and conduct. The man who hitherto has been a good husband and father, becomes a profligate, spendthrift and gambler; the man who has hitherto been most scrupulous in his language and in his sexual conduct becomes foul-mouthed and obscene; the man who was a kind and affectionate husband becomes violent and aggressive toward his wife. Anyone wishing to consider these preliminary symptoms of paralytic dementia as evil tendencies of the mind, would strive in vain with appropriate sermons, reproofs and punishments to make the sick man repent and come back to his former state!

Let us pass on to another example. There is no one who is not aware of the effects of alcohol. There are persons who, when in a state of intoxication, commit actions that are worse than reprehensible, even criminal; actions which the individual himself deplores as soon as the poisonous effects have passed away. Kind-hearted persons go so far as to maltreat their own children, even when they are little babies; they commit violent and degrading acts that often make them shed tears of repentance as soon as they become aware of them. Well, if we should try to make such a person understand, while he is still in a state of intoxication, that his actions are improper, it would be wasted effort. It is better to let the matter pass, or else to give him treatment for his alcoholic condition, which is the cause of his misconduct.

And passing on to another class of cases, does not everyone know that when people are afflicted with a diseased liver, their character alters, they become jealous, quarrelsome, hypochondriac, melancholy? It would be useless to tell such persons that they were formerly more tractable and morally superior; they are already sufficiently afflicted without having us, who are in good health, aggravate them with our useless preaching. And analogously, it is well known that when hysteria attacks a woman it may transform her from a virtuous and modest person to an unhappy creature, compelled by her physical condition to forget herself and compromise the unquestioned propriety of her past life; or again, it may change her from a gentle soul to an insupportable fury, or it may actually develop into such pronounced delirium as to necessitate her confinement in an insane asylum. In this case also, it is the malady that demands treatment, since it is the sole cause of the sad manifestations of a change in character.

Now, the pathological cause most frequently associated with criminal manifestations, is undoubtedly epilepsy. Lombroso himself attributed a vast influence to this etiological factor of criminality; and every day this far-sighted intuition of the master is confirmed and made clearer. The epileptic is not always a criminal, nor does the criminal always show the classic convulsive symptoms. There are cases of epilepsy in which the symptoms are attenuated or latent or replaced by different but equivalent symptoms. It is frequently necessary to diagnose an epileptic character from impulsive tendencies and from long protracted nocturnal enuresis in childhood. De Sanctis has lately been able to prove in his hospital practice that there are many children who have unmistakable epilepsy of the classic type, with violent accesses, but without criminal tendencies; at a certain age the convulsions cease, the patient is apparently cured: but he has become a criminal. On the other hand, there are children with immoral tendencies, destructive, violent, incorrigible; one would say that these were clear cases of predisposition to crime; all at once a genuine epileptic attack occurs, followed by other repeated attacks; the criminal tendencies disappear; the patient is simply an epileptic. In these cases, we have successive forms of epileptic equivalence. In the majority of cases, therefore, the proper course would be to treat the patient for epilepsy, as being the cause of the apparent "evil tendencies of mind." And hence one notable side of the great problem of the moral education of juvenile criminals is transformed fundamentally into this other problem: "Can epilepsy be treated and cured?"

Up to the present, the treatment of epilepsy is a problem. While therapeutics prescribe bromides and warm baths, pedagogy is to-day following a very different course with a combined treatment of hygiene and education. Benedickt, and following him, the principal authorities among medical specialists, are at present condemning the use of depressing bromides, which hide the attacks as an anesthetic hides pain, but do not cure them. The cure, says Benedickt, depends upon hygienic life in the open air in order to absorb the poisons, and upon graded work, provided, however, that the malady is still recent and has not assumed a chronic form. Two principles of much importance: the malady must be of recent occurrence! Consequently, it is only in the period of childhood that we can attempt the treatment of the great majority of those predisposed to crime, with any hope of effecting a cure! A declaration of tremendous interest for the defense of society. But the treatment must be pedagogic. Accordingly, we have returned to the point of departure. We began by asking: "How are we to educate them"? A course of reasoning led us along this different road, "it is necessary to give them treatment." But the treatment consists in educating them. Well, from all this we can so far extract one unassailable principle; in their education all coercive measures must be absolutely abolished, because nervous and convulsive maladies are most successfully treated with gentleness and quiet; it is evident that all emotion, all fear, all nervous exhaustion, all punishment in short, no matter how mild or just it may be, would seem to be prohibited in pedagogic treatment.

Accordingly, it is necessary to approach the question anew; what is needed is to set the nervous system in order, to calm it, to restore its equilibrium. Benedickt says: this is to be achieved through work, rationally measured and graded; hence, manual training, as organised, for example, in the Reformatory of San Michele, constitutes of itself a moral cure; it concurs in readjusting the nervous system by reinforcing it.

However, we must not generalise over such complex questions; if the pathological factor, and more especially epilepsy, constitutes a great centre of biologic causes producing individuals predisposed to crime, we cannot conclude that there is a constant correspondence between epilepsy and criminality. But there is no doubt that among these predisposed we shall almost always find some who are suffering from a taint, or from dystrophy, due to tuberculosis or syphilis; in short, the minus habens, the physiological proletariat.

The benefit wrought by education consists not only in contributing to the real and actual cure, as in the case of epilepsy; but also in the corrective, as well as curative, effect upon the personality. The abnormal mentality which generally accompanies degenerate or epileptic conditions requires special methods of education, which in many cases must absolutely exclude all forms of coercion. Mental hygiene, an abundance of psychic stimulus, partly intellectual (chiefly through objective demonstration) and partly moral (in the form of praise and gentle caressing treatment), are indispensable accompaniments of such education. An abnormal mentality almost always accompanies defects of the mind; from the hypochondriac or the epileptic to the imbecile and the idiot, the abnormal mentality builds itself up from inaccurate perceptions, and hence more or less from illusions; a deficiency of reasoning power or a half delirious condition completes the fatal organisation of a mode of thought which renders such an individual unfitted for his environment. We have seen an example of this in the boy whose clinical history was read in class; his perceptions were inexact, consequently colours, odours, and sounds reached him in a manner somewhat different from our perception of them; his mental world must therefore be differently constructed from ours. Defectives frequently pass by objects without obtaining any impression of them, or else transform what impression they do get into a false idea. Even their sensations of touch and pain are different from the normal. Hence, they do not feel as we do, and are often inaccessible to the anguish of pain which refines human nature by sometimes raising it to the point of heroism. And because we have learned through our own sufferings to understand the meaning of pity, altruism and solidarity, these unhappy beings differ from us even in their relation to society. Their scanty powers of logic lead them to fall openly into errors, which provoke vindictive retaliation on our part that tends in the ultimate analysis to isolate these unfit beings from social intercourse.

To us, their whole conversation is a series of falsehoods, because it does not correspond to what we ourselves see and feel. An understanding between them and us becomes steadily more difficult, in proportion as we continue to perfect ourselves in our individual evolution, while their unhappy state is steadily aggravated through the formidable struggles and persecutions which they meet in an environment to which they are unadaptable. For instance, we saw that one of the boys who has been studied in class, had committed his most reprehensible acts as a result of false logic. "Why do you kill all the pigeons?" "To make them keep still." "Why do you beat your little sister?" "Because she won't work like the others." (The sister in question was only eighteen months old!) Well, he showed in this way that he had learned something from the corrections that he had received. They had punished him so much for being restless, and so much because he did not want to work, that he finally applied his acquired zeal to correcting others in the way that his defective logic dictated. And similarly, after seeing how they weigh objects with a steel-yard—also a form of work—it occurred to him to stick the hook into his little sister, in order to weigh her; and having learned that useful work is paid for in money, which serves to buy the necessities of life, he stole all the money that he could find at home, and gave it to the motormen on the tram-cars, who in his opinion perform the most useful work in the world.

I once had occasion to study a paranoiac patient in the asylum for the criminal insane, who had spent twenty years in prison before his insanity became so pronounced as to cause his removal from one place of restraint to the other. He had killed his betrothed, out of jealousy, so he said, but he narrated the tragic deed with a fullness of detail and a readiness of phrase—his lurking in ambush, the unfortunate girl's approach, her fall under the blows of the cobbler's knife—that proved the cold-blooded calculation with which the crime was committed.

This man was convinced that he possessed such oratorical gifts that if he had pleaded his own case in place of his attorney, the persuasive magic of his eloquence would have resulted in his acquittal. The lawyer had advised him not to speak and the prisoner was sentenced to a term of thirty years. The appeal to the Court of Cassation was denied. The result was that in his desperation at the failure of his defence, and more particularly because he had lost the chance of showing his oratorical powers in public, he conceived the idea that the only way by which he could come into court again, and speak for himself, and force them to acquit him, was to commit another murder. And he actually sprang at his lawyer's throat, armed with a nail, meaning to kill him. Thus we see how paranoiac delirium, and defective reasoning powers, sad evidences of pathological conditions, combined to create the most cynical and repellant of all criminal types.

Accordingly the treatment of the pathological condition, and the education of the mentality in children who are thus predisposed, constitute a great work on behalf of the defence of society.

Well, this is precisely what scientific pedagogy is trying to do, through a rational education of the senses: to correct false perceptions and straighten out the warped and twisted mentality of abnormal children; and little by little, through repetition of the same lessons under different forms, and the establishment of a cooperation of all the senses, the perception of objects tends to approach nearer and nearer to the normal. Meanwhile, hygienic or medical treatment may be used to correct the accompanying physical defects.

Accordingly, we are able to modify an abnormal personality by means of rational medico-pedagogic treatment; and it is by this means alone, and not through destructive coercion, that we may hope to approach the greatly desired goal.

Lastly, it is also necessary, in the etiology of crime, to take into consideration the environment, the bad example, the brutality, the absence of affection, all of which are things which might well pervert the mind of even a normal individual; and when such conditions exist, the removal of the transgressor to a different environment where he may have the benefit of physical, intellectual and moral hygiene, may result in completely transforming him. In these sad cases nothing short of the profoundest love will serve to redeem and even transform into a hero the man who has fallen into evil ways through misfortune.

No one can any longer believe that coercive measures should be added to the cruelty of the environment which oppresses the transgressor. If he has gone astray in the midst of sorrow it will be only through consolation that he can be born again to a new life; if he lost the straight path amid arid wastes, nothing short of a purifying and assuaging spiritual water will enable him to recover his path. As a sign of our humanity let us keep a smile upon our lips and our hearts free of all harshness of offense or defense; our weapons are intelligence and love and it is only by these weapons that we can become conquerors.

But, it may be answered, granted that the education of abnormal persons, and more especially juvenile delinquents, constitutes a complex work in which medicine, a special environment, and the methods of scientific pedagogy contribute harmoniously through diverse ways to the ultimate goal: yet in actual practice how are we to intervene to render docile these rebels whom society itself, with all the forces at its disposal, recognises as dangerous and condemns to isolation? In short, it is argued, a more direct method will be required for their moral education; a clear-cut method to offset that equally direct form consisting of coercion and punishment that are now the consequence of the reprehensible act. Under all the conditions to be considered in regard to the biopathological factors and the social environment, there still remains another element and the most evident of all, namely, the immediate and practical influence exerted directly upon the minds of wayward children. We may say quite truly that beneath the pathological facts and the social injustices, there exists something more profound which, for the sake of simplicity we may call the soul of humanity. Something which responds from soul to soul, which may be aroused from the depths of subconsciousness like a surprise, which may be touched and reveal itself in an outburst of affection previously hidden and unsuspected. Unknown profundities of the spirit, that seem to merge into the eternity of the universe itself and unexpectedly produce new forms as in a chemical reaction. And this is what we really mean by "moral education."

Well, in order to accomplish such a lofty work, we do not need to find a method. Method is always more or less mechanical. Here, on the contrary, is the supreme expression of human life—an evocation of the superman. What we need to find is not a method, but a Master.

Séguin, in his glorious treatise on scientific pedagogy, dedicates a chapter to the training of the teacher of defective children. The teacher of abnormal pupils is not an educator, he is a creator; he must have been born with special gifts, as well as to have perfected himself for this high task. He ought, says Séguin, to be handsome in person, and strong as well, so that he may attract and yet command; his glance should be serene, like that of one who has gained victories through faith and has attained enduring peace; his manner should be imperturbable as that of one not easily persuaded to change his mind. In short, he ought to feel beneath him the solid rock, the foundation of granite on which his feet are planted and his steps assured. From this solid base, he should rise commandingly, like a magician. His voice should be gentle, melodious, and flexible, with bursts of silvery and resounding eloquence, but always without harshness. Séguin describes the methods by which the teacher should educate his own voice, speech and gesture; he should take a course in facial expression and declamation, like a great actor who is preparing to win favor of the select and critical public of the proudest capital.

For, as a matter of fact, he must attract the minds and souls of human beings who are almost inaccessible, beings who form whole armies in the world, entire peoples, they are so numerous; powerful human armies that threaten society with terrible punishment and bring about cruel executions.

But the perfect teacher must possess something more than physical beauty and acquired art; he must have the loftiness of a soul ardent for its mission; yet even this may be cultivated and perfected. The teacher must "perfect himself" in his moral nature. There are men, who from the moment they make their appearance, exert a sort of fascination; everyone else becomes silent in their presence. It is almost as though some natural fluid emanated from them and spread to the others, so profoundly does everyone feel the attraction. When such a man speaks, the words seem, as if by magic, to touch the profoundest recesses of the heart. Hypnotists and magicians! Conquerors of souls! Valiant souls themselves; souls with a great mission!

Well, this is more or less what is demanded of the teacher of abnormal children. He ought to be conscious of his personal dignity and human virtue, and of a sincere love for the children whom it is his task to redeem; his own greatness must overcome their wretchedness. And if he continues to perfect himself and to mount toward the moral altitudes, cultivating at the same time a love for his own mission, he will, as if by magic, become an educator; he will feel that a magic power of suggestion goes forth from him and conquers; the work of redemption will then seem to accomplish itself like a conflagration which has been kindled from some central point and spreads in rolling flames through the dried undergrowth.

Undoubtedly, the guidance of science is not everything to a teacher; the better part is given him through his own moral perfectionment.

4. The biographic history completes the individual study of the pupil and prepares for his diagnosis: combining, to this end, the work of the school with that of the home.

Sergi, in his memorable work, First Steps in Scientific Pedagogy, expresses himself as follows: "the biographic chart is a methodical means for learning to know the body and spirit of the pupil through direct observations.... And, since pupils may be classified according to tendencies, character and intelligence, the master may rationally divide them into various groups, to which he will give varied treatment, according to the direction in which each group shows the greatest need of education.... And he will place himself in closer association with the pupils' families, who should communicate to him their earliest observations regarding the physical and psychological nature of their children."

As a matter of fact, the anthropological movement, through the inquiries necessitated by the compilation of biographic charts, often proves illuminating to the members of the family, in regard to facts and conditions of which they had hitherto remained ignorant (sexual hygiene); in regard to the view they should take of their own children (those who had been regarded as "bad," and who were really ill), in regard to the way they should watch over them and take care of them, etc. Hence it has made a beginning of the practical application of a pedagogic principal that hitherto has only been abstractly visioned, of coordinating the educative work of the family with that of the school. A pedagogic institution which practically realizes this conception, which was hitherto only a utopian dream of pedagogy, is the "Children's House;" because by having school in the home and by having teachers and mothers living together, it results in harmonizing the environment of the family with that of the school, for the furtherance of the great mission of education.

5. The biographic chart will furnish everyone with a document capable of guiding him in his own subsequent self-education.

Sergi says further in the work above quoted:

"The biographic chart should become a precious document to every man, if the sort of record of which I speak were continued through a series of years, from the kindergartens upward through the entire course of the secondary schools, because it would contain, in compact and methodical form, the history of his physical and mental life, and he would find it of inestimable advantage both in practical life and in his various social relations."

6. "Lastly, the biographic chart with its gathering of positive data, prepares a great body of scientific material which will be useful, not alone to pedagogy, but also to sociology, medicine, and jurisprudence."

And in the same aforesaid work, Sergi adds: "If, for example, we should gather" (under the guidance of his biographic chart) "biographic notes in the city of Rome alone and in the elementary schools for both sexes, we should have for a single year, an average of fifty thousand observations, taken on entering and leaving school; if we could have them throughout the whole course of elementary instruction, the number of observations would amount to two hundred and fifty thousand.

"Then we should be able to see in every social class all the individual variations in physical and physiological condition which contribute to the development of the intelligence and to the manifestations of sentiments which play an active part in practical life. And all this would have a value of a sociological character."

This conception of Sergi's is precisely one of the scientific aspects of biographic histories that is of the highest importance, provided that they could be recorded in so simple a manner as to render the researches practically possible, and provided, also, that they could be gathered with a scientific uniformity of method designed to render international researches harmonious. We are certainly still very far removed from the time when international pedagogical congresses will be held for the purpose of establishing a single model form of biographic chart for each of the various grades in school; and also an agreement as to the technical method of taking the anthropological measurements! Before arriving at this point it will be necessary to make many tentative efforts and experiments.

But a truly scientific sociology, as well as pedagogy, ought to emanate from such a study of human beings in the course of formation, because such an enormously large number of observations as could be gathered in school, will reveal to us the biologico-social mechanism through which those activities are formed that are destined to promote the progress of humanity and civilisation (the new generations).

Medicine and the biological sciences in general entered upon a new era of exceedingly rapid progress when the microscope made possible the study of histology and bacteriology; well, the researches in regard to the individual constitute the histology and bacteriology of social science! When Le Play, in his great work, Les Ouvriers Européens, instituted the "family monograph," i.e., the study of household accounts as a basis for "positive sociology," he was considered as the founder of a true social science. Because the true needs of men, the mechanism through which are determined the various personalities that afterward react upon society as creative or destructive forces, can be discovered only through studying minutely such needs and mechanisms, individual by individual, family by family. If Le Play's method, and consequently positive social science, have not as yet made much progress, this is because of the difficulty of penetrating within the family in order to study it.

From the bio-psychological point of view, if not from that of the family account book, the biographic chart of the schools is nevertheless a practical means of contributing to social histology; it is a field open to research and one which must be crossed by every one of the individuals who constitute society. Furthermore, it constitutes a foundation for social embryogeny; because in the school we may study the genesis of separate individuals; the causes which molded their congenital personality, and those which brought about its definitive formation. In the words of Le Play, indorsed by Bodio, this is the only positive material from which the legislator may draw his inspiration in order to become a true dispenser of justice to the people and to conduct the far-sighted reforms that are really necessary for the welfare of society.

Consequently, the anthropologic movement in pedagogy marks an aspect of scientific reform which is universal.

A direct contribution to pedagogy and at the same time to scientific sociology is given by the biographic charts in the "Children's Houses." Since this is a case of school within the home, where the mistress, being domiciled with her scholars, has them under her charge from the age of two or three years, and where there is a permanent resident physician to aid in the compilation of the biographic charts, it is evident that there is a chance of practically applying both the pedagogic plans for studying the pupil, and the social plans of Le Play, who by means of family monographs based upon the family account book, proposed to obtain nothing more nor less than an index of morality, culture, and individual needs! And as a matter of fact, the manner of spending the salary, the savings, the squanderings, the purpose for which money is spent, whether it is for low vices, or for vanity, or for æsthetic or intellectual pleasures in general, etc., reveal the state of civilisation and morality in which people live. In the "Children's Houses" such a study of the family is easy because it is revealed of its own accord, since the families are in contact with the school; consequently, these "Children's Houses" may serve to lay a true and practical foundation for embryogenesis and social histology. In short, the importance of research regarding the individual goes far beyond the school; it leads the way to every kind of social reform.

Even medicine, like every other science, is going to build up a firmer scientific basis through the help of the biographic charts of the schools: Professor De Sanctis has drawn up models for examinations, mainly of a medical nature, to be used in his asylum-schools for defectives; and by thus following the development of the pupils, he has succeeded in throwing positive light upon the biopathological mechanism through which an abnormal psychopathic or neuropathic personality develops; while psychiatry or neuropathology formerly recorded nothing more of such an abnormal personality than the episode of the moment at which the adult patient presented himself at the clinic. Even the individual criminal has now come to be studied in relation to his genesis, and jurists who are seeking a scientific basis for their enactments, should not neglect the individual studies that are being compiled in the schools for defectives. The biographic chart introduced into the government reformatories in Italy will also furnish a direct contribution to social histology, in regard to the genesis of criminal personalities.

Consequently, the reform which has begun with the introduction of an anthropological movement into the school and the establishment of biographic charts, is nothing less than a reform of science as a whole. Medicine, jurisprudence, and sociology as well as pedagogy, are laying new foundations upon it.


CHAPTER X
THE APPLICATION OF BIOMETRY TO ANTHROPOLOGY FOR THE PURPOSE OF DETERMINING THE MEDIAL MEN

Theory of the Medial Man.Measurements are used not only in anthropology but in zoology and botany as well; that is, they are applied to all living creatures; therefore anthropometry might to-day be regarded as a branch of biometry. The measurements obtained from living beings, and the statistical and mathematical studies based upon them, tend to determine the normality of characteristics; and when the biometric method is applied to man, it leads to a determination of the normal dimensions, and hence of the normal forms, and to a reconstruction of the medial man that must be regarded as the man of perfect development, from whom all men actually existing must differ to a greater or less extent, through their infinite normal and pathological variations.

This sort of touch-stone is of indisputable scientific utility, since we cannot judge of deviations from the norm, so long as normality is unknown to us. In fact, when we speak of normality and of anomalies, we are using language that is far from exact, and to which there are no clear and positive corresponding ideas.

Whatever has been accomplished in anthropology up to the present time in the study of the morphology of degenerates and abnormals, has served only to illustrate this principle very vaguely—that the form undergoes alteration in the case of pathological individuals. It is only now that we are beginning to give definite meaning to this principle, by seeking to determine what the form is, when it has not undergone any alteration at all. From this fundamental point a new beginning must be made, on more certain and positive bases, of the study of deviations from normality and their etiology.

As far back as 1835, Quétélet, in his great philosophical and statistical work, Social Physics or the Development of the Faculties of Man, for the first time expounded the theory of the "medial man," founded on statistical studies and on the mathematical laws of errors. He reached some very exact concepts of the morphology of the medial man, based upon measurements, and also of the intellectual and moral qualities of the medial man, expounding an interesting theory regarding genius.

But inasmuch as Quétélet's homme moyen was, so to speak, at once a mathematical and philosophical reconstruction of the non-existent perfect man, who furthermore could not possibly exist, this classical and masterly study by the great statistician was strenuously combatted and then forgotten, so far as its fundamental concepts were concerned, and remembered only as a scientific absurdity. The thought of that period was too analytical to linger over the great, the supreme synthesis expounded by Quétélet.

Mankind must needs grow weary of anatomising bodies and tracing back to origins, before returning to an observation of the whole rather than the parts, and to a contemplation of the future. In fact, the thought of the nineteenth century was so imbued with the evolutionary theories as set forth by Charles Darwin, that it believed the reconstruction of the Pithecanthropus erectus from a doubtful bone a more positive achievement than that of the medial man from the study of millions of living men.

But to-day the researches that we have accomplished in the biological field regarding evolution, regarding natural heredity, regarding individual variability, are leading biology as a whole toward eminently synthetic conclusions; and studies which remained neglected or which were combatted in the past, are beginning to be brought into notice and properly appreciated: such studies, for instance, as Mendel's theory and that of Quétélet. Galton, Pearson, Davenport, Dunker, Heinke, Ludwig, and above all others De Vries, are in the advance guard of modern biological thought. But beyond all these scientists, there is one who has an interest for us not only because he is an Italian, but because he has reestablished Quétélet's ancient theory of the medial man, under the present-day guidance of biometry: I mean Prof. Giacinto Viola.

The Importance of Seriation.—Under the statistical method, the basis of biometry is furnished by a regrouping of measurements in the form of series. We have seen that Quétélet's binomial curve represents the symmetrical distribution of subjects in relation to some one central anthropometric measurement.

Let us suppose, for instance, that the curve here described represents the distribution of the stature. If we mark upon the abscissæ the progressive measurements, 1.55; 1.56; 1.57; 1.58; 1.59; 1.60, etc.... 1.75; 1.76; 1.77; 1.78; 1.79; 1.80, and on the axis of the ordinates the number of individuals having a determined stature, the path of the curve will show that there is a majority of individuals possessing a mean central measurement; and that the number of individuals diminishes gradually and symmetrically above and below, becoming extremely few at the extremes (exceptionally tall and low statures). When the total number of individuals is sufficiently large, the curve is perfect (curve of errors): Fig. 156.

Fig. 156.—The highest part of this curve corresponds to the medial centre of density.

In such a case, the general mean coincides with the median, that is, with the number situated at the centre of the basal line, because, since all the other measurements, above and below, are perfectly symmetrical, in calculating the mean average they cancel out. There is still another centre corresponding to the mean: the centre of density of the individuals grouped there, because the maximum number corresponds to that measurement. Accordingly, if, for example, in place of half a million men whose measurements of stature, when placed in seriation, produced a perfect binomial curve, we had selected only ten men or even fewer from those corresponding to the median line; the general mean stature obtained from those half million men and that obtained from the ten individuals would be identical. For we would have selected ten individuals possessing that mean average stature which seems to represent a biological tendency, from which many persons deviate to a greater or less extent, as though they were erroneous, aberrant, for a great variety of causes; but these aberrant statures are still such that by their excess and their deficiency they perfectly compensate for each other; so that the mean average stature precisely reproduces this tendency, this centre actually attained by the maximum number of individuals. Supposing that we could see together all these individuals: those who belong at the centre being numerically most prevalent, will give a definite intonation to the whole mass. Anyone having an eye well trained to distinguish differences of stature could mentally separate those prevalent individuals and estimate them, saying that they are of mean average stature. This curve is the mathematical curve of errors; and it corresponds to that constructed upon the exponents of Newton's binomial theorem and to the calculation of probability. It corresponds to the curve of errors in mathematics: for example, to the errors committed in measuring a line; or in measuring the distance of a star, etc. Whoever takes measurements (we have already seen this in anthropometrical technique and in the calculation of personal error) commits errors, notwithstanding that the object to be measured and the individual making the measurements remain the same. But the most diverse causes; nerves, the weather, weariness, etc., causes not always determinable and perhaps actually more numerous than could be discovered or imagined, all have their share in producing errors of too much and too little, which are distributed in gradations around the real measurement of the object. But since among all these measurements taken in the same identical way we do not know which is the true one; the seriation of errors will reveal it to us, for it causes a maximum number of some one definite measurement (the true one) to fall in the centre of the aberrations that symmetrically grade off from the centre itself.

Viola gives some very enlightening examples in regard to errors. Suppose, for instance, that an artist skilled in modeling wished to reproduce in plaster a number of copies of a leaf, which he has before his eyes as a model.

The well-trained eye and hand will at one time cause him to take exactly the right quantity of plaster needed to reproduce the actual dimensions of the leaf; at another, on the contrary, he will take more and at another less than required.

By measuring or superimposing the real leaf upon the plaster copies, the sculptor will be able to satisfy himself at once which of his copies have proved successful.

But supposing, on the contrary, that the real leaf has disappeared and that a stranger wishes to discover from the plaster copies which ones faithfully reproduce the dimensions of the leaf? They will be those that are numerically most prevalent.

The same thing holds true for any attempt whatever to attain a predetermined object. For example, shooting at a mark. A skilful marksman will place the maximum number of shots in the centre, or at points quite near to the centre; he will often go astray, but the number of errors will steadily decrease in proportion as the shots are more aberrant, i.e., further from the centre. If a marksman wished to practise in like manner against some wall, for example, on which he has chosen a point that is not marked, and hence not recognisable by others, this point thought of by the marksman, may be determined by studying the cluster of shots left upon the wall.

In the same way an observer could determine the hour fixed for a collective appointment, such as a walking trip, by the manner in which the various individuals arrive in groups; some one will come much ahead of time because he has finished some task which he had expected would keep him busy up to the hour of appointment; then in increasing numbers the persons who come a few minutes ahead of time because they are provident and prompt; then a great number of people who have calculated their affairs so well as to arrive precisely on time; a few minutes later come those who are naturally improvident and a little lazy; and lastly come the exceptional procrastinators who at the moment of setting forth were delayed by some unexpected occurrence.

Causes of error in the individual and in the environment interfere in like manner with the astronomer who wishes to estimate the distance of the stars and it is necessary for him to repeat his measurements and calculations on the basis of those which show the greatest probability of being exact.

Accordingly, such distribution of errors is independent of the causes which produce them and which, whatever they are, remain practically the same at any given time, and consequently produce constant effects and symmetrical errors; but it is dependent upon the fact of the existence of some pre-established thing (a measurement, the dimensions of an object to be copied, an appointed hour, the centre of a target, etc.). In short, whenever a tendency is established the errors group themselves around the objective point of this tendency.

In the case of anthropometry, as for instance, in the curve of stature given above, we find that the resulting medial stature was predetermined, e.g., for a given race; but many individuals, for various causes, either failed to attain it or surpassed it to a greater or less extent; and therefore in the course of their development they have acquired an erroneous stature.

Consequently, this medial stature which still corresponds to the mean average of a very large number of persons, is the stature that is biographically pre-established, the normal stature of the race.

If we select individuals presumably of the same race and in sound health, the serial curve of their statures ought to be very high and with a narrow base, because these individuals are uniform. When a binomial curve has a very wide basis of oscillations in measurements, it evidently contains elements that are not uniform; thus, for example, if we should measure the statures of men and women together, we should of course obtain a curve, but it would be very broad at the base and quite low at the centre of density; and a similar result would follow if we measured the statures of the rich and the poor without distinguishing between them. Since normal stature, including individual variations, has an exceedingly wide limit of oscillation (from 1.25 m. to 1.99 m.), if we should measure all the men on earth, we should obtain a very wide base for our binomial curve, which nevertheless would have a centre of density corresponding to the median line and to the general mean average.

Now this mean stature, according to Quétélet, is the mean stature of the European; and it is that of the medial man. But if we should take the races separately, each one of them would have its own binomial curve, which would reveal the respective mean stature for each race. In the same way, if we took the complex curve of all the individuals of a single race, and separated the men from the women, the two resulting groups would reveal the mean average male stature and the mean average female stature of the race in question. An analogous result would follow if we separated the poor from the rich, etc.

Every time that we draw new distinctions, the base of the curves, or in other words the limits of oscillation of measurements, will contract, and the centre of density will rise; while the intermediate gradations (due, for example, to the intermixture of tall women and short men; or to the overlapping standards of stature of various kindred races, etc.), will diminish. In short, if we construct the binomial curve from individuals who are uniform in sex, race, age, health, etc., it not only remains symmetrical around a centre but the eccentric progression of its groups is steadily determined in closer accordance with the order and progression of the exponents Of Newton's binomial.

However, a symmetrical grading off from the centre is not the same thing as a symmetrical grading off from the centre in a predetermined mode, i.e., that of the binomial exponents. The binomial symmetry is obtained through calculations of mathematical combinations. Now, if the fact of the centrality of a prevailing measurement is to be proved in relation to the predetermination of the measurement itself: for example, in regard to racial heredity, and hence is a fact that reveals normality, the manner of distribution of errors—namely, in accordance with calculations of probability—might very well be explained by Mendel's laws of heredity, which serve precisely to show how the prevailing characteristics are distributed according to the mathematical calculation of probabilities.

Accordingly, the normal characteristic of race would coincide with the dominant characteristic of Mendel's hereditary powers. The characteristic which has been shown as the stronger and more potent is victorious over the recessive characteristics that are latent in the germ. Meanwhile, however, there are various errors which, artificially or pathologically, cause a characteristic, which would naturally have been recessive, to become dominant, or, in other words, most prevalent.