[Ill.u.s.tration: FIG. 481.--Theoretical development of the current scroll.]
One secret of modification is found in the use of a radical in more than one art, owing to differences in constructional characters. For example, the tendency of nearly all woven fabrics is to encourage, even to compel, the use of straight lines in the decorative designs applied.
Thus the attempt to employ curved lines would lead to stepped or broken lines. The curvilinear scroll coming from some other art would be forced by the constructional character of the fabric into square forms, and the rectilinear meander or fret would result, as shown in. Fig. 482, _a_ being the plain form, painted, engraved, or in relief, and _b_ the same idea developed in a woven fabric. Stone or brick-work would lead to like results, Fig. 483; but the modification could as readily move in the other direction. If an ornament originating in the constructional character of a woven fabric, or remodeled by it, and hence rectilinear, should be desired for a smooth structureless or featureless surface, the difficulties of drawing the angular forms would lead to the delineation of curved forms, and we would have exactly the reverse of the order shown in Figs. 482 and 483. The two forms given in Fig. 484 actually occur in one and the same design painted upon an ancient Pueblo vase.
The curved form is apparently the result of careless or hurried work, the original angular form, having come from, a textile source.
[Ill.u.s.tration: _a_, free-hand form. _b_, form imposed, by fabric.
FIG. 482.--Forms of the same motive expressed in different arts.]
[Ill.u.s.tration: _a_, free-hand form. _b_, form imposed by masonry.
FIG. 483.--Forms of the same motive expressed in different arts.]
[Ill.u.s.tration: _a_ _b_ FIG. 484.--Variations resulting from change of method.]
Many excellent examples ill.u.s.trative of this tendency to modification are found in Pueblo art. Much of the ornament applied to pottery is derived from the sister art, basketry. In the latter art the forms of decorative figures are geometric and symmetrical to the highest degree, as I have frequently pointed out. The rays of a radiating ornament, worked with the texture of a shallow basket, spring from the center and take uniform directions toward the margin, as shown in Fig. 485. But when a similar idea derived from basketry (as it could have no other origin) is executed in color upon an earthen vessel, we observe a tendency to depart from symmetry as well as from consistency. I call attention here to the arrangement of the parts merely, not to the motives employed, as I happen to have no examples of identical figures from the two arts.
[Ill.u.s.tration: FIG. 485.--Geometric form, of textile ornament.]
[Ill.u.s.tration: FIG. 486.--Loss of geometric accuracy in painting.]
It will be seen by reference to the design given in Fig. 486, taken from the upper surface of an ancient vase, that although the spirit of the decoration is wonderfully well preserved the idea of the origin of all the rays in the center of the vessel is not kept in view, and that by carelessness in the drawing two of the rays are crowded out and terminate against the side of a neighboring ray. In copying and recopying by free-hand methods, many curious modifications take place in these designs, as, for example, the unconformity which occurs in one place in the example given may occur at a number of places, and there will be a series of independent sections, a small number only of the bands of devices remaining true rays.
[Ill.u.s.tration: FIG. 487.--Design painted upon pottery.]
A characteristic painted design from the interior of an ancient bowl is shown in Fig. 487, in which merely a suggestion of the radiation is preserved, although the figure is still decorative and tasteful. This process of modification goes on without end, and as the true geometric textile forms recede from view innovation robs the design of all traces of its original character, producing much that is incongruous and unsatisfactory.
The growth of decorative devices from the elementary to the highly const.i.tuted and elegant is owing to a tendency of the human mind to elaborate because it is pleasant to do so or because pleasure is taken in the result, but there is still a directing and shaping agency to be accounted for.
I have already shown that such figures as the scroll and the guilloche are not _necessarily_ developed by processes of selection and combination of simple elements, as many have thought, since they may have come into art at a very early stage almost full-fledged; but there is nothing in these facts to throw light upon the processes by which ornament followed particular lines of development throughout endless elaboration. In treating of this point, Prof. C.F. Hartt[2] maintained that the development of ornamental designs took particular and uniform directions owing to the structure of the eye, certain forms being chosen and perpetuated because of the pleasure afforded by movements of the eye in following them. In connection with this hypothesis, for it is nothing more, Mr. Hartt advanced the additional idea, that in unison with the general course of nature decorative forms began with simple elements and developed by systematic methods to complex forms. Take for example the series of designs shown in Fig. 488. The meander _a_ made up of simple parts would, according to Mr. Hartt, by further elaboration under the supervision of the muscles of the eye, develop into _b_. This, in time, into _c_, and so on until the elegant anthemium was achieved.
The series shown in Fig. 489 would develop in a similar way, or otherwise would be produced by modification in free-hand copying of the rectilinear series. The processes here suggested, although to all appearances reasonable enough, should not be pa.s.sed over without careful scrutiny.
[Ill.u.s.tration: FIG. 488.--Theoretical development of fret-work.]
[Footnote 2: Hartt: Popular Science Monthly, Vol. VI, p. 266.]
Taking the first series, we observe that the ornaments are projected in straight continuous lines or zones, which are filled in with more or less complex parts, rectilinear and geometrically accurate. Still higher forms are marvelously intricate and graceful, yet not less geometric and symmetrical.
[Ill.u.s.tration: FIG. 489.--Theoretical development of scroll work.]
Let us turn to the primitive artisan, and observe him at work with rude brush and stylus upon the rounded and irregular forms of his utensils and weapons, or upon skins, bark, and rock surfaces. Is it probable that with his free hand directed by the eye alone he will be able to achieve these rythmic geometric forms. It seems to me that the whole tendency is in the opposite direction. I venture to surmise that if there had been no other resources than those named above the typical rectilinear fret would never have been known, at least to the primitive world; for, notwithstanding the contrary statement by Professor Hartt, the fret is in its more highly-developed forms extremely difficult to follow with the eye and to delineate with the hand. Until arts, geometric in their construction, arose to create and to combine mechanically the necessary elements and motives, and lead the way by a long series of object-lessons to ideas of geometric combination, our typical border ornament would not be possible. Such arts are the textile arts and architecture. These brought into existence forms and ideas not met with in nature and not primarily thought of by man, and combined them in defiance of human, conceptions of grace. Geometric ornament is the offspring of technique.