Darwin and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions, by George John Romanes ...

3

Darwin and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions, by George John Romanes ...

2

Darwin and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions, by George John Romanes ...

1

A critique of the theory of evolution, by Thomas Hunt Morgan ... Lectures delivered at Princeton University, February 24, March 1, 8, 15, 1916.

1916:Feb.-Mar.

The mutation theory; experiments and observations on the origin of species in the vegetable kingdom, by Hugo de Vries ... tr. by Prof. J. B. Farmer and A. D. Darbishire ...

2