Morgan, T.H. A Critique of the Theory of Evolution. N.Y., 1916, pp. 1-27.

[10.]

Loeb, Jacques. Artificial Parthenogenesis and Fertilization. Chicago, 1913, pp. 3, 51f., 240f, 303.

[11.]

Conklin, E.G. Organ-Forming Substances in the Eggs of Ascidians. U. of Pa. Contrib. from the Zool. Lab. Vol. 12. 1905, pp. 205-230.

[12.]

Loeb, J. The Organism as a Whole. N.Y., 1916, pp. 138f, 151-2.