THE want of evidence for the theories which designate particular nations as the first colonizers of the Western Continent, long ago produced a feeling of distrust, which led some to repudiate all claims for the foreign origin of the first inhabitants of this continent. This theory, which claims for the most ancient inhabitants an autochthonic origin, has had from time to time among its advocates some of the most respectable ethnologists. The character of their attainments, and in many cases their arguments in behalf of this most remarkable hypothesis, command the respect of all who are interested in this fascinating field of speculation.

At first it was maintained that the Creator had placed an original pair of human beings here, as Scripture teaches that He did in the old world.[219] Other writers equally confident that the first ancestors of the American race were indigenous, have not so definitely expressed themselves as to the manner of their origin.[220] The most recent phase of the autochthonic theory is that which designates evolution as the means by which the continent was populated with human beings, developed from its own fauna. This latter question is now the most absorbing of all that occupy the attention of the American Anthropologists. But to go back to the separate creation view, we find it expressed in general and unscientific utterances at first, mostly based on the hasty observation of travellers who, in many cases, had little knowledge of anthropologic or ethnic principles. In fact, the subject was not fairly discussed and its advocacy based on satisfactory investigation until the justly celebrated Dr. Samuel G. Morton, of Philadelphia, issued his Crania Americana, containing the results of the most diligent researches on the skulls of the Mound-builders, Mexicans, Peruvians, and many of the known tribes of the Red Indians. In the face of abundant proof among the crania of his own splendid collection, and contrary to the testimony of his numerous measurements, which have often since been used against his theory, this diligent investigator arrived at the conclusion that the Americans were a distinct race, originated in this continent, having a uniform cranial type (excepting only the Eskimo), from the Arctic Circle to Patagonia.

A division, however, of this supposed homogeneous race was made by this author into Toltecan and Barbarous nations; the former appellative comprising all the semi-civilized peoples, while the latter embraced the wild tribes. All were believed to have had the same origin and to belong to the same cranial type. “It is curious to observe, however,” remarks Dr. Morton, “that the Barbarous nations possess a larger brain by five and a half cubic inches than the Toltecans; while, on the other hand, the Toltecans possess a greater relative capacity of the anterior chamber of the skull in the proportion of 42.3 to 41.8. Again the coronal region, though absolutely greater in the Barbarous tribes, is rather larger in proportion in the semi-civilized tribes; and the facial-angle is much the same in both, and may be assumed for the race at 75°.”[221] In conclusion, the author is of the opinion that the facts contained in his work tend to sustain the following propositions: (1) “That the American race differs essentially from all others, not excepting the Mongolian; nor do the feeble analogies of language, and the more obvious ones in civil and religious institutions and the arts, denote anything beyond casual or colonial communication with the Asiatic nations; and even these analogies may perhaps be accounted for, as Humboldt suggested, in the mere coincidence arising from similar wants and impulses in nations inhabiting similar latitudes.” (2) “That the American nations, excepting the Polar tribes, are one race and one species, but of two great families which resemble each other in physical, but differ in intellectual character.” (3) “That the cranial remains discovered in the mounds, from Peru to Wisconsin, belong to the same race and probably to the Toltecan family.”[222] Among the several ethnologists and naturalists who accepted without question the conclusions reached by Morton, the chief was Agassiz, who adopted them as auxiliary to his theory of the correspondence of human life with certain associations in the animal kingdom.[223] They served as a sure foundation, so far as this continent is concerned, for his opinion that the races originated in nations. “We maintain,” says the eminent naturalist, “that, like all organized beings, mankind cannot have originated in single individuals, but must have been created in that numerical harmony which is characteristic of each species. Men must have originated in nations, as the bees have originated in swarms, and as the different social plants have covered the extensive tracts over which they have naturally spread.”[224] This view has been enlarged upon by Messrs. Nott and Gliddon, who argue that, “if it be conceded that there were two primitive pairs of human beings, no reason can be assigned why there may not have been hundreds.”[225] The uniqueness of the so-called American race not only fails of proof, but is positively disproven by the measurements of crania accompanying Morton’s plates, and any thoughtful person cannot avoid surprise that so distinguished a scholar as Agassiz should have committed himself to a theory without first submitting it to a crucial test. That there is a great variety of type observable among the crania figured by Morton, even a superficial examination will show, while a more careful classification presents several facts of interest. For this classification we consider the simple division of the crania into long and short skulls sufficient. The question of other divisions has been often discussed, but with Mr. Huxley we content ourselves with the simplest classification. Referring to a particular instance, he says, “taking the antero-posterior diameter as 100, the transverse diameter varies from 98 or 99 to 62. The number which thus expresses the proportion of the transverse to the longitudinal diameter of the brain-case is called the cephalic index. Those people who possess crania with a cephalic index of 80 and above are called brachycephali (short-skulled), those with a lower index are dolichocephali (long-skulled).”[226] Dr. Meigs, while accepting the classification into long and short skulls, admits that it is open to the objection that it forces into either and opposite classes crania closely related to each other in type and measurement.[227] Yet it must be admitted, that in proportion as arbitrary divisions are increased, these difficulties are multiplied, and that this simple, twofold classification presents the fewest.[228] In the following tables, which contain all the measurements accompanying the plates in the Crania Americana, the cephalic index is placed in the left-hand column. That a wide difference of type is apparent between the extremes of the dolichocephalic and brachycephalic measurements, certainly cannot be denied.

It will be observed that the widest range is found between the proportions of the skull of the Cayuga chief 100 years old (Plate XXXV) with a cephalic index of only 65.4, and those of some of the Peruvian crania having a cephalic index of over 98. The supposed Natchez skull (Plate LIV) is so artificially flattened as to exclude it from the calculation. The mean cephalic index of each of the tables exhibits a well-defined type of the long and the short skull respectively. The former 74.7 and the latter 87 are both far enough removed from the dividing line (80) to leave no doubt that the types are distinct and separate. Additional data, materially strengthening the conclusion of the variety of types found among American crania, has been furnished by that eminent authority Dr. Daniel Wilson.[229] The following table of measurements in inches is based upon his extensive researches:

It requires no careful examination of these figures to observe that the type of skull among the American aborigines, ancient or modern, was in no sense constant, since among the same tribes long and short skulls occur in almost equal numbers. This fact is especially true among the savage Indians. Among the semi-civilized nations, however, as among the Peruvians and Mexicans, the long and short skulls mark the successive existence and destruction of distinct peoples having physiological characteristics peculiar to themselves. The Peruvian elongated crania are always found with large-boned skeletons having strong hands, while the short or rounded crania accompany very small bones, such as were unable to endure labor like the building of pyramids and the erection of such edifices as are found in Peru.[230]

It is with the utmost deference to the genius, and with full recognition of the valuable researches of Dr. Morton, that we disagree with his conclusions and pronounce his theory without foundation in fact. There is no evidence furnished by the measurement of crania that an American race, as unique in itself and distinct from the rest of mankind, ever existed.[231] One of the most interesting studies connected with these tables, as well as other measurements made more recently, is the question of relationship between the various semi-civilized peoples of the ancient period. First and most naturally the type of the mound crania attracts attention, and calls for comparisons with the Indian type and with that of the remarkable people of the more southern civilization.

The “Scioto Mound” skull figured by Dr. Davis in Plates xlvii and xlviii of The Ancient Monuments of the Mississippi Valley, was pronounced by Dr. Morton in Dr. Meigs’ catalogue of the human crania in the collection of the Academy of Natural Sciences of Philadelphia, as “perhaps the most admirably formed head of the American race hitherto discovered.”

The most important measurements are as follows:

The chief features as pointed out by the above-named author, are: the elevated vertex, flattened occiput, great inter-parietal diameter, ponderous bony structure, salient nose, large jaws and broad face. These he pronounces to be characteristics of the American cranium. Dr. Wilson has shown that Dr. Morton has contradicted his own previous definition of what that type is as well as the description given by Humboldt.[232] The propriety of selecting any single cranium as typical of the Mound-builders would be as questionable in this connection as it was for Dr. Morton and the authors of the Types of Mankind to designate the Scioto Mound skull as a type of the American cranium. Until within a few years but few genuine mound skulls were accessible, and considerable suspicion was reasonably attached to the genuineness of several, including three or four of the so-called mound skulls in the Crania Americana. Recent explorations have brought to light a large number, of unquestioned genuineness. The Peabody Museum alone possesses 300, and of these 200 were exhumed by Prof. F. W. Putnam.

From a number of measurements only is it possible for us to approximate the type of the mound skull. We have already referred to the low type skulls secured by Gen. H. W. Thomas from a mound in Dakota Territory.[233] Unfortunately we are without measurements, but from the description we observe that the forehead is decidedly receding, and the orbital ridges are excessively developed. The inferior maxillary is of unusual prominence and much more massive, as is the entire bony structure, than in the common Indian cranium. Another cranium of similar characteristic was exhumed from the great mound on the River Rouge near its junction with the Detroit River, Michigan, by Mr. Henry Gillman. From this mound several crania were taken, of which one (though evidently adult) presented the hitherto, I think I may say, unprecedented feature of its capacity being only fifty-six cubic inches. The mean given by Morton and Meigs of the Indian cranium is eighty-four cubic inches, the minimum being sixty-nine cubic inches. This cranium, forwarded with other relics to the Peabody Museum, presents (though in no wise deformed) the further peculiarity of having the ridges for the attachment of the temporal muscle only .75 of an inch apart, in this respect resembling the cranium of the chimpanzee. It is rarely that in human crania those ridges approach each other within a distance of two inches, while they vary from that to four inches apart.[234] Eight crania were exhumed by Mr. Gillman from the great mound on Rouge River, which furnished him the following measurements: