The two lines with the least variation are a perfectly straight line and a circle. A perfectly straight line has obviously no variety at all, while a circle, by curving at exactly the same ratio all along, has no variation of curvature, it is of all curves the one with the least possible variety. These two lines are, therefore, two of the dullest, and are seldom used in pictures except to enhance the beauty and variety of others. And even then, subtle variations, some amount of play, is introduced to relieve their baldness. But used in this way, vertical and horizontal lines are of the utmost value in rectangular pictures, uniting the composition to its bounding lines by their parallel relationship with them. And further, as a contrast to the richness and beauty of curves they are of great value, and are constantly used for this purpose. The group of mouldings cutting against the head in a portrait, or the lines of a column used to accentuate the curved forms of a face or figure, are well-known instances; and the portrait painter is always on the look out for an object in his background that will give him such straight lines. You may notice, too, how the lines drawn across a study in order to copy it (squaring it out, as it is called) improve the look of a drawing, giving a greater beauty to the variety of the curves by contrast with the variety lacking in straight lines.

Perhaps the most beautiful symmetrically curved figure of all is the so-called egg of the well-known moulding from such a temple as the Erechtheum, called the egg and dart moulding. Here we have a perfect balance between variety and unity. The curvature is varied to an infinite degree, at no point is its curving at the same ratio as at any other point; perhaps the maximum amount of variety that can be got in a symmetrical figure, preserving, as it does, its almost perfect continuity, for it approaches the circle in the even flow of its curvature. This is, roughly, the line of the contour of a face, and you may note how much painters who have excelled in grace have insisted on it in their portraits. Gainsborough and Vandyke are striking, instances.

The line of a profile is often one of great beauty, only here the variety is apt to overbalance the unity or run of the line. The most beautiful profiles are usually those in which variety is subordinated to the unity of the contour. I fancy the Greeks felt this when they did away with the hollow above the nose, making the line of the forehead run, with but little interruption, to the tip of the nose. The unity of line is increased, and the variety made more interesting. The idea that this was the common Greek type is, I should imagine, untrue, for their portrait statues do not show it. It does occur in nature at rare intervals, and in most Western nationalities, but I do not think there is much evidence of its ever having been a common type anywhere.

In drawing or painting a profile this run or unity of the line is the thing to feel, if you would express its particular beauty. This is best done in the case of a painting by finally drawing it with the brush from the background side, after having painted all the variety there is of tone and colour on the face side of the line. As the background usually varies little, the swing of the brush is not hampered on this side as it is on the other. I have seen students worried to distraction trying to paint the profile line from the face side, fearing to lose the drawing by going over the edge. With the edge blurred out from the face side, it is easy to come with a brush full of the colour the background is immediately against the face (a different colour usually from what it is further away), and draw it with some decision and conviction, care being taken to note all the variations on the edge, where the sharpnesses come and where the edge is more lost, &c.

The contours of the limbs illustrate another form of line variety—what may be called "Variety in Symmetry." While roughly speaking the limbs are symmetrical, each side not only has variety in itself, but there is usually variety of opposition. Supposing there is a convex curve on the one side, you will often have a concave form on the other. Always look out for this in drawing limbs, and it will often improve a poorly drawn part if more of this variation on symmetry is discovered.

The whole body, you may say, is symmetrical, but even here natural conditions make for variety. The body is seldom, except in soldiering, held in a symmetrical position. The slightest action produces the variety we are speaking about. The accompanying sketches will indicate what is meant.

Of course the student, if he has any natural ability, instinctively looks out for all these variations that give the play of life to his drawing. It is not for him in the full vigour of inspiration that books such as this are written. But there may come a time when things "won't come," and it is then that it is useful to know where to look for possible weak spots in your work.

A line of equal thickness is a very dead and inexpressive thing compared with one varied and stressed at certain points. If you observe any of the boundaries in nature we use a line to express, you will notice some points are accentuated, attract the attention, more than others. The only means you have to express this in a line drawing is by darkening and sharpening the line. At other points, where the contour is almost lost, the line can be soft and blurred.

It is impossible to write of the infinite qualities of variety that a fine draughtsman will get into his line work; they must be studied first hand. But on this play of thickness and quality of line much of the vitality of your drawing will depend.

Often, the line of a contour at one part of a picture is picked up again by the contour of some object at another part of the composition, and although no actual line connects them, a unity is thus set up between them. (See diagrams, pages 166 and 168, illustrating line compositions of pictures by Botticelli and Paolo Veronese). This imaginary following through of contours across spaces in a composition should always be looked out for and sought after, as nothing serves to unite a picture like this relationship of remote parts. The flow of these lines will depend on the nature of the subject: they will be more gracious and easy, or more vigorous and powerful, according to the demands of your subject.

This parallelism can only be used successfully with the simplest lines, such as a straight line or a simple curve; it is never advisable except in decorative patterns to be used with complicated shapes. Blake is very fond of the sustained effect parallelism gives, and uses the repetition of curved and straight lines very often in his compositions. Note in Plate I of the Job series, page 146 [Transcribers Note: Plate XXXI], the use made of this sustaining quality in the parallelism of the sheep's backs in the background and the parallel upward flow of the lines of the figures. In Plate II you see it used in the curved lines of the figures on either side of the throne above, and in the two angels with the scroll at the left-hand corner. Behind these two figures you again have its use accentuating by repetition the peaceful line of the hacks of the sheep. The same thing can be seen in Plate XXXI, B, where the parallelism of the back lines of the sheep and the legs of the seated figures gives a look of peace contrasting with the violence of the messenger come to tell of the destruction of Job's sons. The emphasis that parallelism gives to the music of particular lines is well illustrated in all Blake's work. He is a mine of information on the subject of line rhythm. Compare A with Plate XXXI, C; note how the emotional quality is dependent in both cases on the parallelism of the upward flow of the lines. How also in Plate I he has carried the vertical feeling even into the sheep in the front, introducing little bands of vertical shading to carry through the vertical lines made by the kneeling figures. And in the last plate, "So the Lord blessed the latter end of Job more than the beginning," note how the greater completeness with which the parallelism has been carried out has given a much greater emphasis to the effect, expressing a greater exaltation and peace than in Plate XXXI, A. Notice in Plate XXXI, D, where "The just, upright man is laughed to scorn," how this power of emphasis is used to increase the look of scorn hurled at Job by the pointing fingers of his three friends.

Of the use of this principle in curved forms, the repetition of the line of the back in stooping figures is a favourite device with Blake. There will be found instances of this in Plate XXXII, E and G. (Further instances will be found on reference to Plates VII, VIII, XIII, and XVII, in Blake's Job.) In the last instance it is interesting to note how he has balanced the composition, which has three figures kneeling on the right and only one on the left. By losing the outline of the third figure on the right and getting a double line out of the single figure on the left by means of the outline of the mass of hair, and also by shading this single figure more strongly, he has contrived to keep a perfect balance. The head of Job is also turned to the left, while he stands slightly on that side, still further balancing the three figures on the right. (This does not show so well in the illustration here reproduced as in the original print.)

Some rude things were said above about the straight line and the circle, on account of their lack of variety, and it is true that a mathematically straight line, or a mathematically perfect circle, are never found in good artistic drawing. For without variety is no charm or life. But these lines possess other qualities, due to their maximum amount of unity, that give them great power in a composition; and where the expression of sublimity or any of the deeper and more profound sentiments are in evidence, they are often to be found.

The rows of columns in a Greek temple, the clusters of vertical lines in a Gothic cathedral interior, are instances of the sublimity and power they possess. The necessary play that makes for vitality—the "dither" as we called this quality in a former chapter—is given in the case of the Greek temple by the subtle curving of the lines of columns and steps, and by the rich variety of the sculpture, and in the case of the Gothic cathedral by a rougher cutting of the stone blocks and the variety in the colour of the stone. But generally speaking, in Gothic architecture this particular quality of "dither" or the play of life in all the parts is conspicuous, the balance being on the side of variety rather than unity. The individual workman was given a large amount of freedom and allowed to exercise his personal fancy. The capitals of columns, the cusping of windows, and the ornaments were seldom repeated, but varied according to the taste of the craftsman. Very high finish was seldom attempted, the marks of the chisel often being left showing in the stonework. All this gave a warmth and exuberance of life to a fine Gothic building that makes a classical building look cold by comparison. The freedom with which new parts were built on to a Gothic building is another proof of the fact that it is not in the conception of the unity of the whole that their chief charm consists.

All objects with which one associates the look of strength will be found to have straight lines in their composition. The look of strength in a strong man is due to the square lines of the contours, so different from the rounded forms of a fat man. And everyone knows the look of mental power a square forehead gives to a head and the look of physical power expressed by a square jaw. The look of power in a rocky landscape or range of hills is due to the same cause.

The horizontal and the vertical are two very important lines, the horizontal being associated with calm and contemplation and the vertical with a feeling of elevation. As was said above, their relation to the sides of the composition to which they are parallel in rectangular pictures is of great importance in uniting the subject to its bounding lines and giving it a well-knit look, conveying a feeling of great stability to a picture.

How impressive and suggestive of contemplation is the long line of the horizon on a calm day at sea, or the long, horizontal line of a desert plain! The lack of variety, with all the energy and vitality that accompany it, gives one a sense of peace and rest, a touch of infinity that no other lines can convey. The horizontal lines which the breeze makes on still water, and which the sky often assumes at sunset, affect us from the same harmonic cause.

The stone pine and the cypress are typical instances of the sublime associated with the vertical in nature. Even a factory chimney rising above a distant town, in spite of its unpleasant associations, is impressive, not to speak of the beautiful spires of some of our Gothic cathedrals, pointing upwards. How well Constable has used the vertical sublimity of the spire of Salisbury Cathedral can be seen in his picture, at the Victoria and Albert Museum, where he has contrasted it with the gay tracery of an arch of elm trees. Gothic cathedrals generally depend much on this vertical feeling of line for their impressiveness.

In the accompanying diagrams, A, B, C and D, E, F, pages 152 [Transcribers Note: Diagram X] and 153 [Transcribers Note: Diagram XI], are examples of the influence to be associated with the horizontal and vertical lines. A is nothing but six straight lines drawn across a rectangular shape, and yet I think they convey something of the contemplative and peaceful sense given by a sunset over the sea on a calm evening. And this is entirely due to the expressive power straight lines possess, and the feelings they have the power to call up in the mind. In B a little more incident and variety has been introduced, and although there is a certain loss of calm, it is not yet enough to destroy the impression. The line suggesting a figure is vertical and so plays up to the same calm feeling as the horizontal lines. The circular disc of the sun has the same static quality, being the curve most devoid of variety. It is the lines of the clouds that give some excitement, but they are only enough to suggest the dying energy of departing day.

Now let us but bend the figure in a slight curve, as at C, and destroy its vertical direction, partly cover the disc of the sun so as to destroy the complete circle, and all this is immediately altered, our calm evening has become a windy one, our lines now being expressive of some energy.

To take a similar instance with vertical lines. Let D represent a row of pine trees in a wide plain. Such lines convey a sense of exaltation and infinite calm. Now if some foliage is introduced, as at E, giving a swinging line, and if this swinging line is carried on by a corresponding one in the sky, we have introduced some life and variety. If we entirely destroy the vertical feeling and bend our trees, as at F, the expression of much energy will be the result, and a feeling of the stress and struggle of the elements introduced where there was perfect calm.

It is the aloofness of straight lines from all the fuss and flurry of variety that gives them this calm, infinite expression. And their value as a steadying influence among the more exuberant forms of a composition is very great. The Venetians knew this and made great use of straight lines among the richer forms they so delighted in.

It is interesting to note how Giorgione in his "Fête Champêtre" of the Louvre (see illustration, page 151 [Transcribers Note: Plate XXXIII]), went out of his way to get a straight line to steady his picture and contrast with the curves. Not wanting it in the landscape, he has boldly made the contour of the seated female conform to a rigid straight line, accentuated still further by the flute in her hand. If it were not for this and other straight lines in the picture, and a certain squareness of drawing in the draperies, the richness of the trees in the background, the full forms of the flesh and drapery would be too much, and the effect become sickly, if not positively sweet. Van Dyck, also, used to go out of his way to introduce a hard straight line near the head in his portraits for the same reason, often ending abruptly, without any apparent reason, a dark background in a hard line, and showing a distant landscape beyond in order to get a light mass to accentuate the straight line.

The rich modelling and swinging lines of the "Bacchus and Ariadne" of Titian in the National Gallery, here reproduced, page 154 [Transcribers Note: Plate XXXIV], would be too gross, were it not for the steadying influence of the horizontal lines in the sky and the vertical lines of the tree-trunks.

While speaking of this picture, it might not be out of place to mention an idea that occurred to me as to the reason for the somewhat aggressive standing leg of the female figure with the cymbals leading the procession of revellers. I will not attempt any analysis of this composition, which is ably gone into in another book of this series. But the standing leg of this figure, given such prominence in the composition, has always rather puzzled me. I knew Titian would not have given it that vigorous stand without a good reason. It certainly does not help the run of the composition, although it may be useful in steadying it, and it is not a particularly beautiful thing in itself, as the position is one better suited to a man's leg than to a woman's. But if you cover it over with your finger and look at the composition without it, I think the reason of its prominence becomes plainer. Titian evidently had some trouble, as well he might have, with the forward leg of the Bacchus. He wished to give the look of his stepping from the car lightly treading the air, as gods may be permitted to do. But the wheel of the car that comes behind the foot made it difficult to evade the idea that he was stepping on it, which would be the way an ordinary mortal would alight. I think the duty of the aggressive standing leg of the leading Bacchante, with its great look of weight, is to give a look of lightness to this forward leg of Bacchus, by contrast—which it certainly does. On examining the picture closely in a good light, you will see that he has had the foot of Bacchus in several positions before he got it right. Another foot can distinctly be seen about a couple of inches or so above the present one. The general vertical direction of this leg is also against its look of lightness and motion, tending rather to give it a stationary, static look. I could not at first see why he did not bring the foot further to the right, which would have aided the lightness of the figure and increased its movement. But you will observe that this would have hurled the whole weight of the mass of figures on the right, forward on to the single figure of Ariadne, and upset the balance; as you can see by covering this leg with your finger and imagining it swinging to the right. So that Titian, having to retain the vertical position for Bacchus' forward leg, used the aggressive standing leg of the cymbal lady to accentuate its spring and lightness.

A feeling of straight-up-ness in a figure or of the horizontal plane in anything will produce the same effect as a vertical or horizontal line without any actual line being visible. Blake's "Morning Stars Singing Together" is an instance of the vertical chord, although there is no actual upright line in the figures. But they all have a vigorous straight-up-ness that gives them the feeling of peace and elevation coupled with a flame-like line running through them that gives them their joyous energy.

The combination of the vertical with the horizontal produces one of the strongest and most arresting chords that you can make, and it will be found to exist in most pictures and drawings where there is the expression of dramatic power. The cross is the typical example of this. It is a combination of lines that instantly rivets the attention, and has probably a more powerful effect upon the mind—quite apart from anything symbolised by it—than any other simple combinations that could have been devised. How powerful is the effect of a vertical figure, or even a post, seen cutting the long horizontal line of the horizon on the sea-shore. Or a telegraph post by the side of the road, seen against the long horizontal line of a hill at sunset. The look of power given by the vertical lines of a contracted brow is due to the same cause. The vertical furrows of the brow continuing the lines of the nose, make a continuous vertical which the horizontal lines of the brow cross (see Fig. A in the illustration). The same cause gives the profile a powerful look when the eyebrows make a horizontal line contrasting with the vertical line of the forehead (Fig. B). Everybody knows the look of power associated with a square brow: it is not that the square forehead gives the look of a larger brain capacity, for if the forehead protrudes in a curved line, as at C, the look of power is lost, although there is obviously more room for brains.

This power of the right angle is well exemplified in Watts' "Love and Death," here reproduced, page 158 [Transcribers Note: Plate XXXV]. In this noble composition, in the writer's opinion one of the most sublime expressions produced by nineteenth-century art, the irresistible power and majesty of the slowly advancing figure of Death is largely due to the right angle felt through the pose. Not getting it in the contour, Watts has boldly introduced it by means of shading the farther arm and insisting on the light upper edge of the outstretched arm and hand, while losing somewhat the, outline of the head beyond. Note also the look of power the insistence on square forms in the drapery gives this figure. The expression is still further emphasised by the hard square forms of the steps, and particularly by the strong horizontal line of the first step so insisted on, at right angles to the vertical stand of the figure; and also the upright lines of the doorway above. In contrast with the awful sublimity of this figure of Death, how touching is the expression of the little figure of Love, trying vainly to stop the inevitable advance. And this expression is due to the curved lines on which the action of the figure is hung, and the soft undulating forms of its modelling. Whereas the figure of Death is all square lines and flat crisp planes, the whole hanging on a dramatic right angle; this figure is all subtle fullness both of contour and modelling melting one into the other, the whole hung upon a rich full curve starting at the standing foot of the advancing figure. And whereas the expression of Death is supported and emphasised by the hard, square forms and texture of the stone steps, the expression of Love is supported and emphasised by the rounded forms and soft texture of the clustering roses. On this contrast of line and form, so in sympathy with the profound sentiment to which this picture owes its origin, the expressive power of this composition will be found to depend.

In the diagram accompanying the reproduction of this picture I have tried to indicate in diagrammatical form some of the chief lines of its anatomy.

In these diagrams of the anatomy of compositions the lines selected are not always very obvious in the originals and are justly much broken into by truths of natural appearance. But an emotional significance depending on some arrangement of abstract lines is to be found underlying the expression in every good picture, carefully hidden as it is by all great artists. And although some apology is perhaps necessary for the ugliness of these diagrams, it is an ugliness that attends all anatomy drawings. If the student will trace them and put his tracing over the reproductions of the originals, they will help him to see on what things in the arrangement the rhythmic force of the picture depends.

Other lines, as important as those selected, may have been overlooked, but the ones chosen will suffice to show the general character of them all.

There is one condition in a composition, that is laid down before you begin, and that is the shape of your panel or canvas. This is usually a rectangular form, and all the lines of your design will have to be considered in relation to this shape. Vertical and horizontal lines being parallel to the boundaries of rectangular pictures, are always right and immediately set up a relationship, as we have seen.

The arresting power of the right angle exists at each corner of a rectangular picture, where the vertical sides meet the horizontal base, and this presents a difficulty, because you do not wish the spectator's attention drawn to the corners, and this dramatic combination of lines always attracts the eye. A favourite way of getting rid of this is to fill them with some dark mass, or with lines swinging round and carrying the eye past them, so that the attention is continually swung to the centre of the picture. For lines have a power of directing the attention, the eye instinctively running with them, and this power is of the greatest service in directing the spectator to the principal interest.

When vertical, horizontal, or diagonal lines are referred to, it must not be assumed that one means in all cases naked lines. There is no pure vertical line in a stone pine or cypress tree, nor pure horizontal line in a stretch of country, but the whole swing of their lines is vertical or horizontal. And in the same way, when one speaks of a composition being hung upon a diagonal, it is seldom that a naked diagonal line exists in the composition, but the general swing is across the panel in harmony with one or other diagonal. And when this is so, there is a unity set up between the design and its boundaries. A good instance of vertical, horizontal, and diagonal lines to unite a picture is Velazquez's "The Surrender of Breda," here reproduced. Note the vertical chord in the spears on the left, continued in the leg of the horse and front leg of the figure receiving the key, and the horizontal line made by the dark mass of distant city, to be continued by the gun carried over the shoulder of the figure with the slouch hat behind the principal group. Velazquez has gone out of his way to get this line, as it could hardly have been the fashion to carry a gun in this position, pointing straight at the head of the man behind. Horizontal lines also occur in the sky and distant landscape, one running right through the group of spears. The use of the diagonal is another remarkable thing in the lines of this picture. If you place a ruler on the slanting line of the flag behind the horse's head to the right, you find it is exactly parallel to a diagonal drawn from the top right-hand corner to the lower left-hand corner. Another line practically parallel to this diagonal is the line of the sword belonging to the figure offering the key, the feeling of which is continued in the hand and key of this same figure. It may be noted also that the back right leg of the horse in the front is parallel to the other diagonal, the under side of it being actually on the diagonal and thus brought into relation with the bounding lines of the picture. And all these lines, without the artifice being too apparent, give that well-knit, dignified look so in harmony with the nature of the subject.

Always be on the look out for straightnesses in curved forms and for planes in your modelling.

Let us take our simplest form of composition again, a stretch of sea and sky, and apply curved lines where we formerly had straight lines. You will see how the lines at A, page 164 [Transcribers Note: Diagram XIV], although but slightly curved, express some energy, where the straight lines of our former diagram expressed repose, and then how in B and C the increasing curvature of the lines increases the energy expressed, until in D, where the lines sweep round in one vigorous swirl, a perfect hurricane is expressed. This last, is roughly the rhythmic basis of Turner's "Hannibal Crossing the Alps" in the Turner Gallery.

One of the simplest and most graceful forms the tying lines of a composition may take is a continuous flow, one line evolving out of another in graceful sequence, thus leading the eye on from one part to another and carrying the attention to the principal interests.

Two good instances of this arrangement are Botticelli's "Birth of Venus" and the "Rape of Europa," by Paolo Veronese, reproduced on pages 166 [Transcribers Note: Diagram XV, Plate XXXVII] and 168 [Transcribers Note: Diagram XVI, Plate XXXVIII]. The Venetian picture does not depend so much on the clarity of its line basis as the Florentine. And it is interesting to note how much nearer to the curves of the circle the lines of Europa approach than do those of the Venus picture. Were the same primitive treatment applied to the later work painted in the oil medium as has been used by Botticelli in his tempera picture, the robustness of the curves would have offended and been too gross for the simple formula; whereas overlaid and hidden under such a rich abundance of natural truth as it is in this gorgeous picture, we are too much distracted and entertained by such wealth to have time to dwell on the purity of the line arrangement at its base. And the rich fullness of line arrangement, although rather excessive, seen detached, is in keeping with the sumptuous luxuriance the Venetian loved so well to express. But for pure line beauty the greater restraint of the curves in Botticelli's picture is infinitely more satisfying, though here we have not anything like the same wealth and richness of natural appearance to engage our attention, and the innocent simplicity of the technique leaves much more exposed the structure of lines, which in consequence play a greater part in the effect of the picture.

In both cases note the way the lines lead up to the principal subject, and the steadying power introduced by means of horizontal, vertical, and other straight lines. Veronese has contented himself with keeping a certain horizontal feeling in the sky, culminating in the straight lines of the horizon and of the sea edge. And he has also introduced two pyramids, giving straight lines in among the trees, the most pronounced of which leads the eye straight on to the principal head.

Botticelli has first the long line of the horizon echoed in the ground at the right-hand lower corner. And then he has made a determined stand against the flow of lines carrying you out of the picture on the right, by putting straight, upright trees and insisting upon their straightness.