INDEX 



Abraxas, 17. 



Acid poisoning, 18 ff . 



Acids, influences of, on heliotropism, 



42, 220; acids and salts, antagonism, 



of, 179 ff. 

 Action of potassium cyanide, 156 flf. 

 Activation of the egg, 6 fif. 

 Agalma, 208. 

 Amphitrite, 144. 

 Animal instincts, experimental control 



of, 218. 

 Antagonism of acids and salts, 179 flf. 

 Antagonism of three salts, 182 flf. 

 Antagonistic salt action, 172 flf. 

 Antedon rosacea, 198. 

 Antennularia antennina, 85, 91, 107, 



217, 

 Ants, 47, 48. 



Aphides, 19, 37 flf., 41 flf., 46. 

 Arabacia, 157, 164, 190. 

 Area striata, 79. 

 Arrhenius, 5, 198. 



Artificial causation of positive heliotro- 

 pism, 43, 220. 

 Artificial parthenogenesis, 7, 116 flf., 



127 flf., 199 flf. 

 Artificial production of double and 



multiple monstrosities in sea-urchins, 



100 flf. 

 Artificial production of living matter, 5. 

 Ascidians, 68. 



Associative memory, 55, 73. 

 Asterias capitata, 198. 

 Asterias forbesii, 135. 

 Asterias ochracea, 138, 162, 198. 

 Asterina, 132, 198. 

 Atwater, 4. 

 " Aura seminalis," 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. 

 Bataillon, 11. 

 Bateson, 226, 

 Bees, 49. 



Beginning of scientific biology, 4. 

 Berzelius, 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. 

 Bunsen, 27, 29, 30, 41, 58. 

 Bunsen-Roscoe law, 27, 28 flf., 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 flf. 



Changes in color of butterflies pro- 

 duced through influence of tempera- 

 ture, 211. 



Chemical agencies, eflfects of, 196 flf. 



Chemical symmetry, 38. 39. 



Chemotropism, 224. 



Chlorostoma, 198. 



Chromosomes, 16 flf. 



Chun, 208. 



Ciamician, 38. 



Cinerarias, 37. 



Ciona intestinalis, 68, 92. 



Claparede, 51. 



Cohen, 208. 



Color, changes in, of butterflies, 

 through influence of temperatiu*e, 

 211; color adaptation, 80 flf., 213 fif.; 

 color blindness, 16. 



Compulsory movements, 38. 



Consciousness, 72. 



Contents of life, 26 flf. 



Cooke, 99. 



Cooperative action of salts causing 

 impermeability of the egg mem- 

 brane, 176 flf. 



Coordinated movements in reflexes, 

 70. 



Copepod, 43, 62. 



Correns, 21. 



Cortical layer, of unfertilized egg, 10, 

 189; mechanical destruction of, 

 10, 11. 



Cosine law of illumination, 41. 



Crabs, fiddler, 60. 



Ctenolabrus, 25. 



Cuma Rathkii, 51. 



Cytolysis, of the egg, 146; mechanical 

 causation of, 145. 



Cytolytic agents, 10, 132 flf., 136, 

 144 fif., 202. 



De Vries, 226. 



Daphnia, 43, 208, 213, 220. 



Darwin, Charles, 195, 196. 



Darwin, F., 58. 



Davenport, 222. 



Death and development, dififerent 



chemical processes, 209 fif. 

 Delage, 11, 131, 203. 

 Depth migration, 220. 

 Development, death and, dififerent 



chemical processes, 209 flf. 

 Difference of salt permeability of 



various membranes, 189 flf. 

 Diflfusion of salts, 177 flf. 



229 



