SUBJECT INDEX 



ABSORPTION OF WATER: relation of, to 

 regeneration, 223 ff. ; a basis for judg- 

 ing effects of ions, 453; effect of H. 

 and OH. ions on, 464 ff. ; by muscles 

 and soaps, 510 ff. 



ACIDS: physiological effects of, 453 ff., 

 501 ff. 



ACTINIA CAEA: heteromorphosis in, 166. 



ACTINIA DIAPHENA: heteromorphosis in, 

 171. 



ACTINIA EQUINA: heteromorphosis in, 

 166 ff. ; stereotropism in, 170. 



ACTINIA MESEMBRYANTHEMUM: geotro- 

 pism in, 183 ; basal end preferred in new 

 growth, 201. 



ACTINOSPH^ERIUM : exception to Pflii- 

 ger's law, 440; liquefaction of proto- 

 plasm of, 448. 



ADAMSIA RONDELETTI : heteromorphosis 

 in, 166. 



ADVENTITIOUS ROOTS : stereotropism of, 

 136. 



AGLAOPHENIA PLUMA: heteromorphosis 

 in, 115, 130; morphology of, 130; deter- 

 minants of heteromorphosis in, 132; 

 stereotropism in, 135; longitudinal 

 growth of, 136; larvse of, 137; geotro- 

 pism in, 176. 



ALG.E: influence of direction of rays of 

 light on, 5, 89; heliotropism of swarm- 

 spores of, 283. 



AMBLYSTOMA : influence of central nerv- 

 ous system on development of, 436 ff. ; 

 galvanotropism in, 440 ff. 



AMMONIUM CHLORIDE : effects on regen- 

 eration and growth, 246. 



AMMOTHEA: segmentation in, 340. 



AMOEBA: spontaneity in, 321. 



AMPHIPYRA : heliotropism in ; 21 ; stereot- 

 ropism in, 21 ; geotropism in, 44. 



AMPHITRITE: artificial parthenogenesis 

 in, 770. 



ANEMONIA SULCATA: heteromorphosis 

 in, 166. 



ANISOTROPY: influence of intense light 

 on, 62. 



ANTENNULARIA: heteromorphosis in, 

 628 ff. 



ANTENNULARIA ANTENNINA : geotropism 

 in, 177 ; growth in, dependent on geot- 

 ropism, 191-204; variation in, 204; irri- 

 tability and growth in, 213; hetero- 

 morphosis in, 249. 



ANTS : influence of less refrangible rays 

 of light on wingless form, 11; heliot- 

 ropism of winged form, 19, 113; rela- 

 tion between heliotropism and sexu- 

 ality of, 52, 113; factors determining 

 nuptial flight of, 53. 



ARBACIA (SEA-URCHIN) : effect of change 

 of concentration of sea-water on cleav- 

 age of eggs of, 253 ff. ; twin production 

 in, 303 ff. ; limit of divisibility of em- 

 bryo of, 323 ff. ; lack of oxygen and seg- 

 mentation of eggs of, 400 ff. ; effect of 

 ions on unfertilized eggs of, 576 ff. ; on 

 fertilized eggs of, 581 ff. ; artificial par- 

 thenogenesis in, 624 ff. 



ARTEMIA MOLHAUSENII: artificial con- 

 version into Branchipus, 237 ff. 



ARTEMIA SALINA: conversion into Mul- 

 hausenii, 237 ff. 



ARTISTIC IMPULSE: anthropomorphic 

 conception of, 165. 



ASCARIS : agglutination of eggs of, 678. 



ASSOCIATIVE MEMORY : definition of, 365. 



ASTERIAS (STAR-FISH): geotropism in 

 183 ff., 291 ; artificial parthenogenesis 

 by shaking eggs of, 768. 



ASTERIAS FORBESII: artificial partheno- 

 genesis in, 644 ; prolongation of life of 

 unfertilized eggs of, 728 ff. 



ASTERINA GIBBOSA : geotropism in, 183. 



ASTERINA TENUISPINA: heliotropism in 

 183. 



AUDITORY NERVES: relation of, to orien- 

 tation, 188. 



AURELIA AURITA : relation of concentra- 

 tion of water to contractions of, 561. 



BACTERIA: heliotropism of, 15; orienta- 

 tion influenced by assimilation, 15. 



BALANUS PERFORATUS : negative stereot- 

 ropism in, 111; change of sense of 

 heliotropism in, 113, 272, 417: depth- 

 migrations of, 290. 



BARANA CASTELLI: regeneration of, 338. 



BASES: physiological effects of, 461. 



BATHOMETRIC DISTRIBUTION : of pelagic 

 animals, 178: physiological conditions 

 determining, 289 ff. 



BEETLES : heliotropism of, 56, 70, 85. 



BLOOD-VESSELS : development of, 297 ff . 



BOMBYX : parthenogenesis in, 580. 



BOMBYX LANESTRIS : heliotropism in, 38. 



BOMBYX NEUSTRA : geotropism in, 85. 



BRAIN : regeneration of, 251 ; physiology 

 of, in worms, 345 ff. 



BRANCHIOMMA: explanation of eye on 

 gill of, 97. 



BRANCHTPUS : Schmankewitsch's experi- 

 ment on, 237. 



BRYOPSIS : organization controlled by 

 external forces, 202. 



BURSARIA: heliotropism in, 15. 



BUTTERFLIES: sleep of, 37; heliotropism 

 in, 20, 37. 



777 



