The tendency to this repetition of colors is shown very clearly in Mexican codices. For example in the Codex Nuttall, p. 82 (fig. 47), we find in the figure in the left hand lower corner a base in which stepped triangles are used with the sequence: yellow, red, black, yellow, purple, reddish brown. On the same page, the feather fringes on the coats of the figures represented are in the same order. Quite a number of feather dresses may be found in which the same order is preserved, as for instance on page 81 of the same Codex. The order in which these colors are given runs sometimes from left to right; sometimes from right to left, as for instance in the feather dress of the lowest left hand figure, page 81. Sometimes a different set of colors is used. On the feather headdress of a figure, page 75, we find the order: white, red, yellow, blue, purple, brown, white, purple, yellow, blue, red, brown (twice), and the latter order is repeated in figures found on page 67 in the left hand lower corner on a base; in reverse order on page 67 on a feather coat and also on page 62 in stripes on the figures in the lower right hand corner. It seems that in this codex the order of colors is quite definitely fixed. Remarkable rhythmic repetitions are found also on bead work from the Zambesi. On quite a number of specimens the following order of colors is regularly repeated: _Black_ white red yellow _green_ yellow red white. Or written in another way: _Green_ yellow red white _black_ white red yellow. [Illustration: Fig. 47. Patterns from Mexican Codex.] These occur on a belt, a woman’s apron, a necklace, and on two mats[36]. In a number of places blue is substituted for green, and brown for red. [36] Muller et Snelleman, L’industrie des Caffres dans le sud-est de l’Afrique. Pl. XIX figs. 3, 5, 7. Pl. XXIV figs. 1, 2. The rhythmic repetition and symmetry appears most clearly when we substitute numbers for colors. I designate White 1, Red 2, Yellow 3, Brown 3′, Blue 4, Green 4′, Black 5. According to the description of the belt first mentioned, as given by the authors, there is a regular repetition in the following order: 1 2 3 | _4_ | 3´ 2 1 | _5_ | 1 2 3 | _4´_ | 3 2 1 | _5_ | 1 2 3 |4´| The same order is found on the handle of an axe which is decorated with colored zig-zag lines[37]. [37] _Ibid._, plate XI, fig. 1. On a pouch[38] there is a lower field arranged in rows of diamonds, followed by a middle field consisting of zig-zag bands, and an upper field consisting again of diamonds. [38] _Ibid._, plate XXIV, fig. 3. In this the order is from below upward 2 1 _5_ 1 2 3 _4_ 3 2 | 4 3 5 1 5 3 5 1 | diamonds zig-zags 2 3 _4_ 3 2 diamonds. Like symmetry, rhythmic repetition runs generally on horizontal levels, right and left, although not quite as preponderantly as symmetry.