276 



'92a. Heredity and the germ cells. Am. Nat., XXVI, pp. 642-670. 



'93. The rise of the mammalia in North America. Am. Jour. Sci., Vol. 

 XLVI, pp. 379-448, and Biological Studies of Columbia College, Part I. 



'94. Alte und neue Probleme der Phylogenese. Ergebnisse, Anatomie und 

 Entw., III. 



'94a. From the Greeks to Darwin. Macmillan & Co. 



'95. Environment in its influence upon the successive stages of development 

 and as a cause of variation. Science, I, 35. 



'95a. The hereditary mechanism and the search for the unknown factors of 

 evolution. Biological Lectures, 1894. Boston, 1895. 



Packard, A. S., '94. On the inheritance of acquired characters in animals, 

 with a complete metamorphosis. Proc. Am. Acad., XXIX, pp. 331-370. 



'94a. The origin of the subterranean fauna of North America. Am. Nat., 

 XXVIII, p. 727. 



Pearson, K., '94. Contributions to the mathematical theory of evolution. 

 Phil. Trans., 185A. 



Pfeffer, G., '94. Ueber die Umwandlung der Arten auf Grund des Ueber- 

 lebeus eines verschiedengearteten Durchscbnitts je nach dem wechsel der Lebens- 

 bedingungen verh. Deutsche Zotil. Gess., 3 vers., pp. 57-69. 



Eomanes, G. J., '90. Weisrnann's Theory of Heredity. Contemporary Re- 

 view, May, 1890. Reprinted in Smithsonian Rpt, 1890. Pt. 1, p. 433. 



'92. Darwin and after Darwin. Vol. I. 



'95. Darwin and after Darwin. Vol. II. Open Court Publishing Co., 

 Chicago. 



Ryder, J. A., '90. A physiological hypothesis of heredity and variation. 

 Am. Nat., XXIV, pp. 85-92. 



'92. On the mechanical genesis of the scales of fishes. Proc. Acad. Nat. 

 Sci., Phila., pp. 219-224. 



Proofs of the effect of habitual use in the modification of animal organisms. 

 Proc. Am. Phil. Soc, Phila., Vol. XXVI. 



'93. The inheritance of modifications due to disturbances of the early stages 

 of development. Proc. Acad. Nat. Sci., Phila., pp. 75-94. 



'94. Dynamics in evolution. Biological Lectures, 1893, pp. 63-83. Boston, 

 1894. 



'95. A dynamical hypothesis of inheritance. Biological Lectures, 1894, pp. 

 23-55. Boston. 



Scott, W. B., '91. On some of the factors in the evolution of the mammalia. 

 Jour. Morph., V, 378. 



