[178] Wasteneys, H., Jour. Biol. Chem., 1916, xxiv., 281.

[179] F. Lillie thinks that the KCN in this experi­ment merely inhibits the change of the cortical layer necessary for development. This is contradicted by two facts: first, the writer has shown in 1906 that KCN does not inhibit the membrane forma­tion, and, second, the eggs will not return to the resting stage when put back into sea water too soon; in that case they will disintegrate. This shows that in the KCN something more happens than the mere block to disintegra­tion.

[180] Loeb, J., Untersuchungen zur physiologischen Morphologie der Tiere. II. Organbildung und Wachsthum. Würzburg, 1892.

[181] Loeb, J., Die chemische Entwicklungserregung des tierischen Eies. Berlin, 1909.

[182] McClung, C. E., “The Accessory Chromosome—Sex Determinant?” Biol. Bull., 1902, iii., 43.

[183] Wilson, E. B., “Studies on Chromosomes,” Jour. Exper. Zoöl., 1905, ii., 371, 507; 1906, iii., 1; 1909, vi., 69, 147; 1910, ix., 53; 1912, xiii., 345. “Croonian Lecture,” 1914, Proc. Roy. Soc., B. lxxxviii., 333.

[184] Doncaster, L., The Determina­tion of Sex. Cambridge, 1914.

[185] Morgan, T. H., Heredity and Sex. New York, 1913.

[186] Bridges, C. B., Genetics, 1916, i., 1.

[187] Boveri, Th., Arch. f. Entwcklngsmech., 1915, xlii., 264.