230 



INDEX 



Heliotropism (continued) 



of free-moving organisms, 124. 

 in larvae of Eudendrium, 125. 

 in Aphides, 126. 

 in caterpillars of PortheSia, 126. 

 direction of motion determined 

 by direction of light rays and not 

 by intensity, 126. 

 negative heliotropism in animals, 



128. 



Helmholtz, 53. 

 Hemiptera, spermatozoa of two kinds in, 



188. 



Hemolysis, 182. 

 Henking, 188. 

 Herbst, 75, 158, 169, 213. 

 Hereditary effects of the spermatozoon 



and the egg, 179. 



Heredity, prevailing influence of the egg 



in early stages of development, 179. 



influence of egg and spermatozoon 



in adult, 180. 



influence of the nucleus in, 180. 

 Mendel's experiments, 180, 183. 

 chemical compounds in, 180. 

 determination of sex, 186. 

 egg structure in heredity, 191. 

 Hermann, 22, 58, 70, 145. 

 Hertwig, O., no, 179. 

 Hertwig, O. and R., 64, 65, 164, 166, 169. 

 Hertwig, R., 63, 166. 

 Hertzian waves, 112. 

 Herzog, 13. 



Heteromorphosis, 201 ff. 

 in Ciona, 209. 

 in Planarians, 210. 

 Hildebrandt, 124. 

 Hill, 9, n, 12. 

 Hippiscus, 1 88. 

 Hober, 44, 50, 95. 

 Van't Hoff, 108. 

 Hoffmann, 94. 

 Holmes, 134, 139, 158. 

 Hoppe-Seyler, 16, 114. 

 Hybridization, 3, 161 ff. 

 in vertebrates, 161. 

 Mendel's experiments, 183. 

 heterogeneous, in Echinoderms, 162. 

 Hydatina, 190. 

 Hypertonic solutions, nuclear division in, 



. 6 3- . 



in artificial parthenogenesis, 170. 



Hypophysis, 216. 



Imbert, 55, 57. 

 Instinctive reactions, 158. 

 Instincts, 5, 186, 189. 

 Ion-colloids, 82, 95. 

 lon-proteids, 78, 167. 

 Irritability, theory of, 78. 



Jacquet, 14, 15. 

 Janssens, 164. 



Jennings, 155. 

 Jones, 27. 

 Jorissen, 114. 



Kastle, 9, 10, n, 14, 19, 26, 28. 



Kellogg, 133, 190. 



Kirchoff, 8. 



Knight, 147. 



Knop's solution, 71. 



Kofoid, 196. 



Kolliker, 66. 



Korschelt, 187. 



Kostanecki, 175. 



Krafft, 34. 



Kreidl, 151, 152. 



Kuhne, 103. 



Kulagin, 166. 



Kuliabko, 18. 



Kutscher, 12. 



Laminaria, 206. 



Landois, 182. 



Lanice, 196. 



La Place, 7. 



Lavoisier, 7. 



Lefevre, 174. 



Lenhossek, 187. 



Lens, regeneration of, 215. 



Leuckart, 165. 



Leuwenhock, 161. 



Lewis, 215. 



Liebermann, 96. 



Liebig, 24. 



Von Liebig, G., 22. 



Light, photochemical effects, 113. 



effect on assimilation in green plants, 

 114. 



waves effective in assimilation, 115. 



heliotropic effects, 117. 



waves most effective in heliotropism, 

 117. 



reactions of animals to changes of 



intensity, 135. 

 Lillie, Frank, 175. 

 Lillie, Ralph, 16, 65. 



Limulus larvcE, negative heliotropism in, 

 128. 



reversal of heliotropism, 133. 

 Linder, 51. 

 Lingle, 81, 83. 

 Lipase action, reversible, 9. 



imitated by platinum-black, n. 

 Liquefactions in absence of oxygen, 



20. 



Living matter, limit of divisibility, 29. 



foam structure and emulsions, 31. 



colloidal character of, 33. 

 Locke, 51, 76. 



Loevenhart, 9, 10, n, 14, 26, 28, 88. 

 Loew, 26. 

 Ludloff, 142. 

 Lymncrns, 196. 

 Lyon, 62, 150, 152, 159. 



