47 

 vii. Inheritance of Acquired Chaj'acters. 



(Lamarck, Philosophic Zoologique; See also Translation in 

 American Naturalist, Vol. 22, pp. 960-972 and 1054-1066; 

 Darwin, The Origin of Species; Darwin, Animals and 

 Plants under Domestication; Eimer, Organic Evolution; 

 Cope, Origin of the Fittest ; Osborn, Palaeontological Evi- 

 dence for the Transmission of Acquired Characters, Amer. 

 Nat., Vol. 23, pp. 561-566; Ball, Are the Effects of Use and 

 Disuse Inherited.' Osborn, Are Acquired Variations Inher- 

 ited.' Amer. Nat., Vol. 25, pp. 191-216; Spencer, The Prin- 

 ciples of Biology, Vol. i, pp. 402-475; Spencer, Factors of 

 Organic Evolution; Weismann, Essays upon Heredity, Vol. 

 I, pp. 387-448; Poulton, Theories of Evolution, Proc. Bos- 

 ton Society of Natural History, Vol. 26, pp. 371-393 ; Spen- 

 cer, The Inadequacy of Natural Selection, Contemporary 

 Review, Vol. 63, pp. 153-166 and 439-456; Romanes, Mr. 

 Herbert Spencer on " Natural Selection," I.e., pp. 499-517; 

 Spencer, Professor Weismann's Theories, /. c, pp. 743-760; 

 Romanes and Hartog, The Spencer-Weismann Controversy, 

 I.e. Vol. 64, pp. 50-59; Weismann, The All-Sufficiency of 

 Natural Selection, /. e., pp. 309-338 and 596-610 ; Spencer, 

 A Rejoinder to Professor Weismann, /. u, pp. 893-912 ; Ro- 

 manes, Weismannism ; Romanes, Darwin and after Darwin, 

 Vol. 2 ; Hyatt, Phylogeny of an Acquired Characteristic, 

 Proc. Amer. Phil. Soc, Vol. 32, pp. 349-647, 1894 ; Cope, Pri- 

 mary Factors of Organic Evolution; Bailey, Plant-Breed- 

 ing-) 



a. Evidence in favor of the inheritance of acquired 

 characters. 



(i) Indirect evidence. 



"Appearances." 



Apparent uselessness of nascent adapta- 

 tions (palaeontology). 



Reflex actions. 



Instinct. 



(2) Direct evidence. 



Inherited effects of use and disuse. 



Climate. 



Food. 



(3) Experimental evidence. 

 Brown-Sequakd's experiments. 



