. Readings in evolution, genetics, and eugenics. Evolution; Heredity; Eugenics. VARIATION 313 following average numbers of stamens: (i) , (2) , (3) , (4) , (s) , f6) Finally, Klebs subjected similar plants from white, red, and blue light to chemical analysis in order to secure further evidence of the physiological effects of light of different wave. Fig. 51.—Sedum speclahik. The three shoots (taken from a single plant) were planted in small pots on March 12, 1904, and placed in different greenhouses, /, in blue light; //, in mixed white light; ///, in red light. Photo


. Readings in evolution, genetics, and eugenics. Evolution; Heredity; Eugenics. VARIATION 313 following average numbers of stamens: (i) , (2) , (3) , (4) , (s) , f6) Finally, Klebs subjected similar plants from white, red, and blue light to chemical analysis in order to secure further evidence of the physiological effects of light of different wave. Fig. 51.—Sedum speclahik. The three shoots (taken from a single plant) were planted in small pots on March 12, 1904, and placed in different greenhouses, /, in blue light; //, in mixed white light; ///, in red light. Photographed on September 30, 1914. {From Bahcock atid Clausen, after Klebs.) lengths. Table I shows the composition of the leaves in three plants like those shown in Fig. 51. They were in their respective greenhouses from June 6 to September 7. The percentages shown are per 100 g. of dry substance. In comparing these percentages it should be remembered that the plant in white light produced 1324 flower buds and the plant in red light 405, while the plant in blue light produced none. This explains the higher percentage of ash, nitrogen and protein in the last. On the other hand, the amounts of starch and sugar found in the plant from white light are decidedly larger than the one from blue Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Newman, Horatio Hackett, b. 1875. Chicago : University of Chicago Press


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