The love of contrast makes the Chinese porcelain-painter break the blue borders of his plates with small cartouche-like forms inclosing the light ground, varied with a spray or device of some light kind; or the diagonal, closely-filled field of his woven silk by broad discs or cartouches of another plane of ornament. But the love of sharp or very violent contrasts, more especially of form, may easily lead one astray and be destructive of ornamental effect. Like all decorative considerations, the artistic use of contrast depends much upon the particular case and the conditions of the work, and one cannot lay down any unvarying rules. There are agreeable and disagreeable contrasts, and their choice and use must depend upon the individual artist.
Variation of Allied Forms
The most beautiful kinds of design rather seem to depend upon the harmonious variation in association of similar or allied forms than on sharp contrasts.
In compositions of figures the association of the delicate curves and angles of the human form, and the lines of drapery, with the emphatic verticals and horizontals, the semicircles and rectangles of architectural form, for instance, are always delightful in competent hands; as also compositions of figure and landscape, with its possibilities of undulating line corrected by the severe horizon, or sea-line, and contrasted with the vertical lines of trees, stems, and the rich forms of foliage masses.
For the same reasons both of correspondence and contrast, masses of type or lettering of good form are admirable as foils to figure designs, in which commemorative monuments of all kinds and book designs afford abundant opportunities to the designer.
Use Of Human Figure and Animal Forms
In surface or textile decoration of all kinds nothing gives so much relief and vitality as the judicious use of animal forms and the human figure, although they are not much favoured at present. The forms of birds and animals, if designed in relation to the rest of the pattern, will give a pleasant variety of form and line, and in their forms and lines we find just those elements both of correspondence and contrast, in their relation to geometric or to floral design, which are so valuable.
In order to combine such forms successfully, however, great care in designing is necessary; and a good sound principle to follow as a general guide is to make the boundaries of the bird or animal touch the limits of an imaginary inclosing form of some simple geometric or floral or leaf shape (see p. [104]). This would at once control the form and render it available in a pattern as a decorative mass or unit. The particular shape of the controlling form must, of course, depend upon the general character of the design, whether free and flowing or square and restricted, the nature of the repeat, the ultimate position of the work, and so on. A study of Gothic heraldry and the early Sicilian silk patterns would be very instructive in this connection, since it is rather the heraldic ideal than that of the natural history book which is decoratively appropriate. At the same time it is quite possible to combine ornamental treatment with a great deal of natural truth in structure and character.