INDEX 



Absolute, Driesch's theory of, 47. 



Acceleration (in physics), 355. 



Acquired characters 



induced by the environment, 216 ; a means of transformism, 220 

 evidence of transmission scanty, 225 ; transmission not inconceivable, 

 226, 



Actions, categories of, and consciousness, 282 ; deliberative, 283 ; mechanistic 

 hypothesis of, 157 ; stereotyped, 283 ; at a distance, 304. 



Activation of the ovum, 176. 



Adaptability, indicative of dominance, 258. 



Adaptation, 217 ; 



and acquired characters, 219 ; and changes of morphology and function, 

 219 ; not inherited, 220; causes of, 239. 



Adaptive response, 219. 



Adiabatic changes, 361, 



Aggregates, molecular, 353. 



Algae, distribution of, 260. 



Allelomorphs, Mendelian, 231. 



Alternation of generations, 175. 



Amido-substances, 88 



Anabolism, 88. 



Anatomical parts, homologies of, 251. 



Animal action, considered objectively, 278. 



Animal and plant contrasted, 269 



Animality, 269. 



Annectant forms of life, 253. 



Annelids, morphology of, 248. 



Anthropomorphism in theories of action, 148. 



Anti -enzymes, 94. 



Antitoxins, 36. 



Ants, a dominant group, 260. 



Appendix vermiformis, 250. 



Approximation, standards of, 347. 



Armoured animals, 263. 



Arthropods, morphology of, 249 ; 



a dominant group, 259 ; distribution, 260 ; musculature of, 275 ; adapta- 

 tions for mobility, 275 ; limits to size of, 275. 



Assimilation, 67. 



Atoms, constitution of, 355 ; 



arrangements of, 353. 



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