INDEX 



Acclimatization to solutions, 87 ; to 

 heat and cold, 249, 255, 257 ; to 

 contact-irritation, 382 ; to stimuli, 

 484. 



Acetic acid, attracts zoospores, 38 ; re- 

 pels amoeba, 38. 



Acetoxim, 15. 



Acids, inorganic, as poisons, 12 ; pro- 

 voking response, 37. 



Acids, organic, as poisons, 13; chemo- 

 taxis towards, 37. 



Actinia, action of nicotin on, 23. 



Actinophrys, action of hydrogen on, 

 5 ; of quinine, 27 ; of varying den- 

 sity, 76 ; heat-rigor of, 232. 



Actinospherium, response to density, 

 86; contact, 98, 102; alternating 

 current, 131 ; galvanic current, 139. 



ADDUCO, action of cocaine, 24. 



ADERHOLD, chemotaxis, 33, 34 ; grav- 

 ity, 114 ; phototaxis, 183 ; acclima- 

 tization to cold, 257. 



ADRIANOWSKY, light and seed germi- 

 nation, 420 ; green rays on plants, 

 435. 



AEBY, free nitrogen as food, 312. 



^Ethalium, rheotaxis of, 108 ; photo- 

 taxis, 185. 



AFFANASIEFF, cold on muscle, 242. 



Agaricus, light on germination of, 420. 



ALBERTONI, cocaine on protoplasm, 24. 



ALCOHOL, on protoplasm, 10 ; struct- 

 ural formulas, 11 ; resistance of or- 

 ganisms to, 1 1 ; chemotactic action, 

 37. 



Aldehydes, 20. 



Algse, effect on, of hydrogen peroxide, 

 3 ; sodic-chromate, 4 ; potassic per- 

 manganate, 4 ; potassic chlorate, 4 ; 

 potassic dichromate, 4 ; potassic ar- 

 senite and arsenate, 5 ; arsenious 

 acid, 5 ; azoimid, 7 ; chloral hydrate, 

 10 ; carbonic disulphide, 12 ; organic 



acids, 13 ; calcic oxide, 13 ; diamid, 

 phenylhydrazin, 16 ; nitrous acid, 

 21 ; paraldehyd, 21 ; sodic fluoride, 

 21 ; oxygen, 34 ; changing density, 

 86 ; molar agents, 100 ; growth of 

 A. and salts, 302; nitrogen, 309; 

 potassium, 318, 319. 



Alkaline salts and growth, 318. 



Alkaloids, as poisons, 22. 



Ammonia, effect on Tradescantia and 

 Spirogyra, 6. 



Amoeba, effect on, of hydrogen, 5 ; 

 curare, 26 ; quinine, 27 ; chemotaxis, 

 38 ; varying density, 75, 86 ; molar 

 agents, 99 ; thigmotaxis, 105 ; elec- 

 tric irritation, 130, 132 ; electric ac- 

 climatization, 139 ; electrotaxis, 148 ; 

 phototaxis, 186 ; heat-rigor, 232 ; 

 coagulation, 238 ; cold, 241 ; thermo- 

 taxis, 258 ; foods of A., 328. 



Ampelopsis, phototropism, 438. 



Amphibia, foods of, 329 ; temperature 

 and growth, 459. 



Amphioxus, electric excitation, 137. 



Ancylus, acclimatization to changed 

 density, 85. 



ANDREWS, photic irritability of Hy- 

 droids, 179. 



Anex type of electric response, 137. 



Animals, toxic protein compounds, 22 ; 

 salts necessary for, 302; organic foods 

 of, 327 ; thigmotropism, 382 ; geotro- 

 pism, 398; phototropism, 442; growth 

 of, at various temperatures, 457. 



Anisonema, change of structure with 

 density of solution, 77. 



Annelida, negatively electrotactic, 147 ; 

 ultramaximum, 234, 246. 



Antimony, effect on growth, 314. 



Antipyrin, on protoplasm, 27. 



Ants, chemotaxis, 33 ; phototaxis, 198 ; 

 thermotaxis, 261. 



Apostrophe, conditions of, 190. 



493 



