of fillets.]

[Illustration: FIG. 317. Isolated figures produced by modifying the
order of intersection.]

Assuming that the idea of developing these figures into something more
elaborate and striking is already conceived, let us study the
processes and tendencies of growth. A very slight degree of ingenuity
will enable the workman to vary the relation of the parts, producing a
succession of results such, perhaps, as indicated in Fig. 316. In
this example we have rows of isolated squares in white which may be
turned hither and thither at pleasure, within certain angles, but they
result in nothing more than monotonous successions of squares.

[Illustration: FIG. 318. Pattern produced by simple alternations of
light and dark fillets. Basketry of the Indians of British Guiana.]

Additional facility of expression is obtained by employing dark
strands in the vertical series also, and large, isolated areas of
solid color may be produced by changing the order of intersection,
certain of the fillets being carried over two or more of the opposing
series and in contiguous spaces at one step, as seen in Fig. 317. With
these elementary resources the weaver has very considerable powers of
expression, as will be seen in Fig. 318, which is taken from a basket
made by South American Indians, and in Fig. 341, where human figures
are delineated. The patterns in such cases are all rigidly geometric
and exhibit stepped outlines of a pronounced kind. With impacting and
increased refinement of fillets the stepped character is in a
considerable measure lost sight of and realistic, graphic
representation is to a greater extent within the workman's reach. It