Free Drawing and Sketching Lessons
"THE PRACTICE & SCIENCE OF DRAWING"
Author: HAROLD SPEED
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XIII RHYTHM VARIETY OF MASS
The masses that go to make up a picture have variety in their shape, their tone values, their edges, in texture or quality, and in gradation. Quite a formidable list, but each of these particulars has some rhythmic quality of its own about which it will be necessary to say a word.
As to variety of shape, many things that were said about lines apply equally to the spaces enclosed by them. It is impossible to write of the rhythmic possibilities that the infinite variety of shapes possessed by natural objects contain, except to point out how necessary the study of nature is for this. Variety of shape is one of the most difficult things to invent, and one of the commonest things in nature. However imaginative your conception, and no matter how far you may carry your design, working from imagination, there will come a time when studies from nature will be necessary if your work is to have the variety that will give life and interest. Try and draw from imagination a row of elm trees of about the same height and distance apart, and get the variety of nature into them; and you will see how difficult it is to invent. On examining your work you will probably discover two or three pet forms repeated, or there may be only one.
Or try and draw some cumulus clouds from imagination, several groups of them across a sky, and you will find how often again you have repeated unconsciously the same forms. How tired one gets of the pet cloud or tree of a painter who does not often consult nature in his pictures. Nature is the great storehouse of variety; even a piece of coal will suggest more interesting rock-forms than you can invent. And it is fascinating to watch the infinite variety of graceful forms assumed by the curling smoke from a cigarette, full of suggestions for beautiful line arrangements. If this variety of form in your work is allowed to become excessive it will overpower the unity of your conception. It is in the larger unity of your composition that the imaginative faculty will be wanted, and variety in your forms should always be subordinated to this idea.
Nature does not so readily suggest a scheme of unity, for the simple reason that the first condition of your picture, the four bounding lines, does not exist in nature. You may get infinite suggestions for arrangements, and should always be on the look out for them, but your imagination will have to relate them to the rigorous conditions of your four bounding lines, and nature does not help you much here. But when variety in the forms is wanted, she is pre-eminent, and it is never advisable to waste inventive power where it is so unnecessary.
But although nature does not readily suggest a design fitting the conditions of a panel her tendency is always towards unity of arrangement. If you take a bunch of flowers or leaves and haphazard stuff them into a vase of water, you will probably get a very chaotic arrangement. But if you leave it for some time and let nature have a chance you will find that the leaves and flowers have arranged themselves much more harmoniously. And if you cut down one of a group of trees, what a harsh discordant gap is usually left; but in time nature will, by throwing a bough here and filling up a gap there, as far as possible rectify matters and bring all into unity again. I am prepared to be told this has nothing to do with beauty but is only the result of nature's attempts to seek for light and air. But whatever be the physical cause, the fact is the same, that nature's laws tend to pictorial unity of arrangement.
It will be as well to try and explain what is meant by tone values. All the masses or tones (for the terms are often used interchangeably) that go to the making of a visual impression can be considered in relation to an imagined scale from white, to represent the lightest, to black, to represent the darkest tones. This scale of values does not refer to light and shade only, but light and shade, colour, and the whole visual impression are considered as one mosaic of masses of different degrees of darkness or lightness. A dark object in strong light may be lighter than a white object in shadow, or the reverse: it will depend on the amount of reflected light. Colour only matters in so far as it affects the position of the mass in this imagined scale of black and white. The correct observation of these tone values is a most important matter, and one of no little difficulty.
The word tone is used in two senses, in the first place when referring to the individual masses as to their relations in the scale of "tone values"; and secondly when referring to the musical relationship of these values to a oneness of tone idea governing the whole impression. In very much the same way you might refer to a single note in music as a tone, and also to the tone of the whole orchestra. The word values always refers to the relationship of the individual masses or tones in our imagined scale from black to white. We say a picture is out of value or out of tone when some of the values are darker or lighter than our sense of harmony feels they should be, in the same way as we should say an instrument in an orchestra was out of tone or tune when it was higher or lower than our sense of harmony allowed. Tone is so intimately associated with the colour of a picture that it is a little difficult to treat of it apart, and it is often used in a sense to include colour in speaking of the general tone. We say it has a warm tone or a cold tone.
There is a particular rhythmic beauty about a well-ordered arrangement of tone values that is a very important part of pictorial design. This music of tone has been present in art in a rudimentary way since the earliest time, but has recently received a much greater amount of attention, and much new light on the subject has been given by the impressionist movement and the study of the art of China and Japan, which is nearly always very beautiful in this respect.
This quality of tone music is most dominant when the masses are large and simple, when the contemplation of them is not disturbed by much variety, and they have little variation of texture and gradation. A slight mist will often improve the tone of a landscape for this reason. It simplifies the tones, masses them together, obliterating many smaller varieties. I have even heard of the tone of a picture being improved by such a mist scrambled or glazed over it.
The powder on a lady's face, when not over-done, is an improvement for the same reason. It simplifies the tones by destroying the distressing shining lights that were cutting up the masses; and it also destroys a large amount of half tone, broadening the lights almost up to the commencement of the shadows.
Tone relationships are most sympathetic when the middle values of your scale only are used, that is to say, when the lights are low in tone and the darks high.
They are most dramatic and intense when the contrasts are great and the jumps from dark to light sudden.
The sympathetic charm of half-light effects is due largely to the tones being of this middle range only; whereas the striking dramatic effect of a storm clearing, in which you may get a landscape brilliantly lit by the sudden appearance of the sun, seen against the dark clouds of the retreating storm, owes much of its dramatic quality to contrast. The strong contrasts of tone values coupled with the strong colour contrast between the warm sunlit land and the cold angry blue of the storm, gives such a scene much dramatic effect and power.
The subject of values will be further treated in dealing with unity of tone.