INDEX 



231 



MacCallum, 44, 93. 

 Mach, 145, 151. 

 Maltase, 11. 

 Margelis, 218. 

 Massart, 154. 

 Mathews, 92, 173. 

 Maupas, 190. 

 Majcwell, 103, 144, 157. 

 Mfjex, 53. 

 McClung, 188, 190. 

 Jtlead, 166. 



Medusa, analogy of contractions to heart- 

 beat, 81. 

 Membrane, fertilization, 162. 

 Membranes of precipitation, 38. 

 Mendel, 3, 180, 183, 184, 186. 

 Von Mering, 23. 

 Merogony, 164, 179. 

 Metabolism, different in presence and in 



lack of oxygen, 18. 

 Metal proteids, 78. 

 Meyer, 6, 40, 216. 

 Miescher, 4. 

 Minkowski, 23. 



MoUusks, artificial parthenogenesis in, 175. 

 Morgan, 59, 63, 159, 164, 166, 192, 194, 



206, 210, 213, 214, 222. 

 Mortality of hybrids, 183. 

 Miiller-Hettlingen, 145. 

 Muscle, electrical phenomena in, 68. 



CO2 produced in, 68. 



tone affected by K and Ca, 86. 

 Muscular contraction, 52. 



hypotheses of, 53. 



Engelmann's hypothesis, 54. 



Bernstein's hypothesis, 57. 



Imbert's hypothesis, 57. ' 

 Mutation theory, De Vries', 3, 224. 



Narcotics, 40. 



Negative wave, 169. 



Neilson, 11. 



Nereis, stereotropism of, 157. 



Nernst, 40, 100. 



Nerve, CO2, produced in, 68. 



electrical phenomena,- 68. 



impuke, 70. 

 Nervous disease, possible chemical cause 



of, 92. 

 Nervous system, influence on regenera- 

 tion, 213, 216. 



may convey chemical substances, 216. 

 Norman, 63, 166. 

 Nuclear membrane, 65. 

 Nucleus, in cell division, 60. 



division of, without division of pro- 

 toplasm, 63. 



in heredity, 180. 

 Nussbaum, 16, 29, 165, 190. 

 Nutritive solutions for green plants, 71. 



for fungi, 72. 



for animals, 74. 

 Nuttall, 182. 



Ocneria, 190. 

 (Enothera, 224. 

 Oker-Blom, 69. 

 Oligodynamic effects, 73. 

 Ophelia, artificial parthenogenesis in, 175. 

 Organisms as chemical machines, i. 

 Orthoptera, spermatozoa of, 188. 

 Osmotic pressure and exchange of liquids 

 between the cells and surrounding 

 Uquids, 41. 



effect on cell division, 63. 

 Osterhout, 207. 

 Ostwald, Wilhelm, 8, 9, 69. 

 Ostwald, Wo., 51, 97, 149. 

 Otolith organs, 151. 

 Oudemans, 190. 

 Overton, 6, 40. 

 Oxidases, 13. 

 Oxidation, in living matter, 7, 13 ff. 



through peroxides, 14. 



in mature egg, 177. 

 Oxygen, in cell division, 16. 



in fermentation, 16. 



in segmenting eggs, 17. 



in growth and regeneration, 17. 



in Infusprians, 21. 



in phosphorescence, 67. 



in rhythmical contraction of heart 

 muscle, 82. 



as a protective substance, 18. 



irreversible changes in lack of, 18. 



bacterial poisons more virulent in 

 absence of, 19. 



structural changes in lack of, 19. 



effect of certain poisons resembles 

 effect of lack of oxygen, 21. 



Palcemon, otoliths in, 151. 

 Palcemonetes, galvanotropism in, 144. 

 Paramcecium, galvanotropism in, 142. 

 Parker, 139. 



Parthenogenesis, natiiral, in Aphides, 165. 

 in bees, 165. 

 in starfish, 173. 



artificial, by raising concentration of 

 sea water, 167. 

 in Ckcetopterus by addition of a 



K-salt, 174. 

 in asterias, 173. 

 in Strongylocentrotws, 167 ff. 

 in Thalassema, 174. 

 in Ophelia, 175. 

 in mollusks, 175. 

 in vertebrates, 175. 

 Pasteur, 17, 19, 21, 24. 

 Pauli, 32, 78, 108. 

 Pemsel, 96. 

 Pennaria, 218. 

 PermeabiUty of plant cells, 41. 



of muscle, 42. 

 Peroxides in oxidation processes, 14. 

 Petromyzon, 175. 

 Petrunkewitsch, 165. 



