BIBLIOGRAPHY 255 



SEMPIK, KARL. "The Natural Conditions of Existence as 

 they affect Animal Life," 18S1. [One of the finest and 

 soundest of biological books, with an educative sceptical 

 reserve, discussing in particular the influence of the 

 environment, but before the question of the transmission 

 of somatic modifications had become urgent.] 



SEWARD, A. 0. (Editor). "Darwin and Modern Science." 

 1909. [A valuable series of essays by representative 

 biologists. ] 



***SPENCER, HERBERT. " Principles of Biology." 2 vols., 

 London, 1866-68. Revised Edition, 1908. [This was, in 

 its time, a masterpiece, a magnificent " materialism," an in- 

 comparably acute analysis and re-synthesis of the biology 

 of the day. The re-edition was, in our judgment, less 

 valuable, because it did not really assimilate the progress 

 that had been made.] 



STERNE, CARUS [ERNST KRAUSE]. " Werden und Vergehen." 

 3rd Edition, 1886. [A remarkably vivid book giving an 

 account of the great steps in evolution.] 



"Die allgemeine Weltanschauungen." 1889. [An in- 

 teresting account of the old interpretations of the 

 cosmos. ] 



BUTTON, J. BLAND. "Evolution and Disease." 1890. [A 

 very suggestive contribution to the natural history of 

 disease. Comparison of pathological and normal changes 

 of structure. ] See also ' ' Introduction to General 

 Pathology." 1886. 



THOMSON, J. ARTHUR. "The Science of Life." 1899. [A 

 short general survey of the development of biology.] 



"The Study of Animal Life. [See examples of the web 



of life, and the chapter on the evolution of evolution 

 theories. ] 



"Heredity." 1909. [An exposition of the problems of 



heredity and an estimate of the various contributions, 

 biometrical, experimental and cytological ; and with an 



extensive bibliography. ] 

 * " Darwinism and Hui 



tuman Life." 1909. [Six lectures 

 introductory to the study of evolution problems.] 



**TowER, W. L. " Evolution in Ohrysomelid Beetles." 1906. 

 [An important investigation on environmental factors 

 serving as stimuli to germinal variations.] 



**VARIGNY, H. DE. " Experimental Evolution." 1892. [An 

 admirable introduction to the experimental study of 

 evolution.] 



