412 



Index 



Subjectivity of affective tenden- 

 cies, 377. 



Substitution of part for whole, 

 363, 368, 376, 385. 



Succession of ontogenetic stages, 

 15, 246, 330. 



Symmetrical planes, 69, 115. 



Syncytium, 39, 230. 



Synergids, Sach's, 41. 



Synthesis vital, 340. 



Tadpole, disappearance of tail, 

 49; amputated tails of, 116, 

 307; grafts, 128. 



Telephone, 301. 



Teratogenesis, 126. 



Terns, stomachs of, 125. 



Thermal energy, 348. 



Thirst, 363. 



Tornier; theory of inheritance, 

 232. 



Transference, 385 ff. 



Transplantation of tissues, 90, 

 122. 



Triton, regeneration of the lens 

 of the eye of, 28, 89, 140; ar- 

 rest of development of, 99. 



Trophic stimulus, 37, 49. 



Unicellular organisms HKC pluri- 

 cellular, 59. 



Variations, coordinated, see Co- 

 ordinated variations ; sponta- 

 neous, 144; plus and minus, 

 191. 



Vegetative affinity, 92. 



Velleius dilatatus, 200. 



Verworn ; physiologic signifi- 

 cance of the cell nucleus, 54 

 note, 57 note; biogen-hypo- 

 thesis, 335- 



Vis a fronte, 398 f. 



Vis a tergo, 398 f . 400. 



Vital energy, 336. 



Vital induction, Bard, 231. 



Vital phenomenon, general, 299, 

 315, 318, 319, 322 ff, 332, 343, 

 348, 350, 357- 



Vital principle, search for the 

 nature of, 335. 



Vital processes, identical, 43. 



Vitis aestivalis, 156. 



Vochting; "harmonicity," 89. 



Volvox, cell communications, 30. 



Vulpian; continued life in am- 

 putated tails, 116. 



Watase; centrosomes, 355. 



Weber, E. H. ; effects of absence 

 of the spinal cord, 305. 



Weismann ; inactivity of the germ 

 plasm, 17 ; chromatin, 82 ; an- 

 tagonism between germinal and 

 somatic nuclei, 84, 85; pre- 

 formation proper, 106, 121 ; in- 

 admissibility of determinants 

 of, 125; principle of the ca- 

 pacity of alteration, 127; rigid- 

 ity of the determinants, 131 ; 

 post generation, 134; new 

 formations in regeneration, 

 137; regeneration, 139; ceno- 

 genetic regeneration, 142 ; 

 grouping of determinants, 143 ; 

 preformation, 147; pangens, 

 152; intermingling of paternal 

 and maternal characters, 154; 

 doubt of the inheritance of ac- 

 quired characters, 159; Punjabi, 

 164; opposed to Brown Se- 

 quard, 168; non-inheritance oi 

 the effects of amputations, 170; 

 arguments against the inherit- 



