n LIVING MATTEE 63 



W. BATESON. Heredity, Differentiation, and other Conceptions of Biology. Proc 



Roy. Soc., 1901, Ixix. 193. 



T. M. BALDWIN. Development and Evolution. London & New York, 1902. 

 A. K. MARSHALL, E. B. POULTON, etc. Five Years' Observations and Experiments 



(1896-1901) on the Bionomics of South Africa Insects. Trans. Entom. Soc., 



London, 1902, p. 287. 

 K. PEARSON. Mathematical Contributions to the Theory of Evolution. Proc. Roy. 



Soc., London, 1902, Ixix. 330 ; 1903, Ixxi. 288. 

 A. R. WALLACE. Darwinism : Exposition of the Theory of Natural Selection with 



some of its Applications. London, Macmillan, 1902. 

 W. F. R. WELDON. Professor de Vries on the Origin of Species. Biometrika, 



1902, i. 365. 



TH. M. MORGAN. Evolution and Adaptation. New York, 1903. 

 W. BATESON. Opening Address at the British Association (Zoology). Nature 



1904, Ixx. 406, 539. 

 A. D. DARBISHIRE. On the bearing of Mendelian Principles of Heredity on Current 



Theories on the Origin of Species. Manchester Lit. Phil. Soc., 1904, xlviii. 

 A. S. PACKARD. The Origin of the Markings of Organisms (poecilogenesis) due to 



the Physical rather than to the Biological Environment ; with criticism of the 



Bates-Miiller hypotheses. Proc. Amer. Phil. Soc., 1904, xl. 393. 

 R. C. PUNNETT. Merism and Sex in spinax niger. Biometrika, 1904, iii. Part 



IV., p. 313. 

 A. E. BROWN. The Utility Principle in Relation to Specific Characters. Proc. 



Ac. Nat. Sc., Philad., 1905, Ivii. 206. 

 E. S. CONKLIN. The Mutation Theory from the Standpoint of Cytology. Sc. , 



N.S., 1905, xxi. 525. 

 H. E. CRAMPTON. On a General Theory of Adaptation and Selection. Journ. of 



Exper. Zool., 1905, ii. 425. 

 C. B. DAVENPORT. Evolution without Mutation. Journ. of Exper. Zool., 1905, 



ii. 137. 

 W. S. HARWOOD. New Creations in Plant Life : an Account of the Life and Work 



of Luther Burbank. New York, 1905. 



N. DE VRIES. Species and Varieties. Chicago, Open Court, 1905. 

 R. H. LOCK. Recent Progress in the Study of Variation, Heredity, and Evolution. 



London, 1906, xv. 299 pp. 

 C. U. MERRIAM. Is Mutation a Factor in the Evolution of the High Vertebrates ? 



Science, 1906, p. 241. 



