INDEX 



Abraxas, 17. 



Acid poisoning, 18 fl. 



Acids, influences of, on heliotropism, 



42, 220; acids and salts, antagonism, 



of, 179 ft. 

 Action of potassium cyanide, 156 fll. 

 Activation of the egg, 6 fll. 

 Agalma, 208. 

 Amphitrite, 144. 

 Animal instincts, experimental control 



of, 218. 

 Antagonism of acids and salts, 179 ff. 

 Antagonism of three salts, 182 fC. 

 Antagonistic salt action, 172 ff. 

 Antedon rosacea, 198. 

 Antennularia antennina, 85, 91, 107, 



217. 

 Ants, 47, 48. 



Aphides, 19, 37 fl., 41 fl., 46. 

 Arabacia, 157, 164, 190. 

 Area striata, 79. 

 Arrhenius, 5, 198. 



Artificial causation of positive heliotro- 

 pism, 43, 220. 

 Artificial parthenogenesis, 7, 116 fl., 



127 IT., 199 ff. 

 Artificial production of double and 



multiple monstrosities in sea-urchius, 



100 ff. 

 Artificial production of living matter, 5. 

 Ascidians, 68. 



Associative memory, 55, 73. 

 Asteriaa capitata, 198. 

 Aaterias forbesii, 135. 

 Asterias ochracea, 138, 162, 198. 

 Asterina, 132, 198. 

 Atwater, 4. 

 "Aura seminaJis," 113. 



Baer, K. E. von, 114. 

 Balanus perforatus, 46, 53. 

 Baltzer, 15. 

 Bancroft, 51. 

 Bardeen, 92. 

 Barry, 114. 



Bases as membrane-forming sub- 

 stances, 134. 

 BataiUon, 11. 

 Bateson, 226. 

 Bees, 49. 



Beginning of scientific biology, 4. 

 Berzehus, 4. 

 Biedermann, 173. 

 Biology, beginning of scientific, 4. 

 Bischof, 115. 

 Blaauw, 29. 

 Bohn, 40, 49, 54, 55. 

 Bolina, 208. 

 Boveri, 15. 



Butschli, 145, 146, 147. 

 Bunseu, 27, 29, 30, 41, 58. 

 Buusen-Eoscoe law, 27, 28 fl!., 40, 58. 

 Butyric acid, treatment of egg, 10. 



Callianira, 208. 



Cannon, 222. 



Catalysis of esters, 43. 



Catalyzer, 4, 5. 



"Center of coordination," 72. 



Cerianthus membranaceus, 93. 



Chaetopterus, 117. 



Change in intensity of light, 54 fl. 



Changes in color of butterflies pro- 

 duced through influence of tempera- 

 ture, 211. 



Chemical agencies, effects of, 196 fl. 



Chemical symmetry, 38, 39. 



Chemotropism, 224. 



Chlorostoma, 198. 



Chromosomes, 16 ff. 



Chun. 208. 



Ciamlcian, 38. 



Cinerarias, 37. 



Ciona intestinalis, 68, 92. 



Clapargde, 51. 



Cohen, 208. 



Color, changes in, of butterflies, 

 through influence of temperature, 

 211; color adaptation, 80 fl., 213 fl.; 

 color blindness, 16. 



Compulsory movements, 38. 



Consciousness, 72. 



Contents of Ufe, 26 fl. 



Cooke, 99. 



Cooperative action of salts causing 

 impermeability of the egg mem- 

 brane, 176 fl. 



Coordinated movements in reflexes, 

 70. 



Copepod, 43, 62. 



Correns, 21. 



Cortical layer, of imtertilized egg, 10. 

 189; mechanical destruction of, 

 10, 11. 



Cosine law of illumination, 41. 



Crabs, flddler, 60. 



Ctenolahrus, 25. 



Cuma Rathkii, 51. 



Cytolysis, of the egg, 146; mechanical 

 causation of, 145. 



Cytolytic agents, 10, 132 fl., 136, 

 144 fl., 202. 



De Vries, 226. 



Daphnia, 43, 208, 213, 220. 



Darwin, Charles, 195, 196. 



Darwin, F., 58. 



Davenport, 222. 



Death and development, different 



chemical processes, 209 fl. 

 Delage, 11, 131, 203. 

 Depth migration, 220. 

 Development, death and, different 



chemical processes, 209 ff. 

 Difference of salt permeabihty of 



various membranes, 189 fl. 

 Diflusion of salts, 177 fl. 



229 



