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 Plate 41.—This plate shows three three-color combinations; in each figure two of the colors are complementary, and the third color is a mixture of the two. Fig. 290 is composed of red, sea-green, and black; the latter was produced by a mixture of the red and sea-green shown in this figure. Fig. 291 is composed of orange, blue, and an olive produced by a mixture of the two. Fig. 292 is composed of purple, light green, and a color produced by a mixture of the two.

Plate 42.—This plate contains only one specimen—Fig. 293; it is composed of one of the dark tones of yellow, its tint, and pale gold. This combination belongs to the harmony of scale.

Plate 43.—This plate shows a very elaborate specimen—Fig. 294—printed in gold and eight colors. In the feather, the gold was printed first; then the green; then the reddish purple; then the maroon-red; then the deep blue, and finally the sea-green. The card and border was printed in color 51 and its tint, and a sea-green tint.

Plate 44.—This plate contains some elegant combinations of gold and two colors. Fig. 295 was first printed in a blue tint, then in gold, and then in one of the dark tones of orange. Fig. 296 was first printed in a flesh tint, then in gold, and then in a half-tone of deep blue. Fig. 297 is a combination of the three primaries—red, yellow, and blue, modified by mixture with other colors. Fig. 298 is a splendid combination of sea-green, gold, and one of the dark tones of orange, printed in the order named. Fig. 299 is a combination of the three primaries—red, yellow, and blue, modified by mixture with other colors. Fig. 300 was first printed in a delicate green tint, then in gold, and then in a light red-brown. Fig. 301 was first printed in a purple tint, then in gold, and then in a light green.

Plate 45.—This plate also contains some splendid combinations of gold and colors. Fig. 302 was first printed in a yellow tint, then in gold, and then in a sage green; this is a good example of the harmony of relative colors—the colors, including gold, being