502 



INDEX 



98 ; by light, 166-175 ; by heat, 222- 

 225 ; limiting conditions of, 275. 



METSCHNIKOFF, chemotaxis in bacte- 

 ria, 33. 



Mice, acclimatized to ricin, 29-32. 



MIGULA, inorganic acids on protoplasm, 

 12. 



MILDE, light and spores, 424. 



MINOT, growth, 289. 



Mistletoe, light and growth, 423, 438. 



MIYOSHI, chemotropism, 338, 340 ; hy- 

 drotropism, 358. 



MOHL, twining stems, 377 ; acclimati- 

 zation to light, 444. 



MOISSAK, temperature and metabolism 

 in plants, 223. 



Moist gelatine, no thigmotropic re- 

 sponse to, 278. 



Moisture and protoplasm, 58. 



Molar agents, and lifeless matter, 97 ; 

 and protoplasm, 97 ; movement, 98, 

 99 ; metabolism, 98 ; direction of 

 locomotion, 105 ; and growth, 370. 



Molds, and sodic carbonate, 28 ; nutri- 

 tive solutions for, 302 ; and free 

 nitrogen, 308 ; potassium and growth, 

 318 ; rubidium, 320 ; election of or- 

 ganic foods, 333 ; thigmotropism, 

 381 ; electrotropism, 412 ; light, 420. 



Molecular composition and effect on 

 metabolism, 39. 



MOLESCHOTT, effect of light on verte- 

 brates, 422. 



MOLISCH, hydrotropism, 257 ; potas- 

 sium and calcium in growth, 319, 

 320 ; chemotropism, 336, 337 ; hy- 

 drotropism, 359 ; thigmotropism, 

 381. 



Mollusca, formaldehyde, 21 ; quinine, 

 27 ; changed density, 79 ; electro- 

 taxis, 147; phototaxis, 202, 207; 

 ultramaximum temperature, 235 ; 

 ultraminimum, 245 ; species living 

 in hot springs, 251 ; composition, 

 295 ; light and growth, 426. 



MONTEGAZZA, effect of strong light on 

 bacteria, 171. 



MONTI, food of Amoeba, 328. 



MOORE, light and chlorophyll arrange- 

 ment, 189, 191, 192. 



MORIGGIA, heat-rigor, 232. 



Morphine, and protoplasm, 25. 



Moths, phototaxis, 197. 



Mucor, phenylhydrazin a poison, 16 - 



tropisms in, 482. 

 MULLER, H., responding region in 



phototropism, 441. 

 MULLER, N. J. C., definition of growth, 



282. 



MULLER, O., thigmotropism, 379, 380. 

 MULLER-HETTLINGEN, electric stress 



in seedlings, 405 ; electrotropism, 



409. 

 MULLER-THURGAU, freezing-point in 



plants, 247. 



MUNTER, vitality of dried seeds, 64. 

 MUNTZ, nitrifying organisms, 308, 310. 

 Musca, light and growth, 432. See 



also Fly. 

 Muscle, electric stimulus, 133, 135; 



cold-effect, 242. 

 Myriapoda, hydrocyanic acid secreted, 



19. 

 Mytilus, acclimatization to density, 85, 



86. 



Myxomycetes, hydrogen, 5 ; chemo- 

 taxis, 33, 38, 45 ; varying density, 



75, 86 ; molar agents, 100 ; electric 



stimulation, 129 ; light stimulus, 



179 ; phototaxis, 184, 202. 



NAGEL, electric stimulus, 135-138; 

 electrotaxis in invertebrates, 146, 

 150, 151 ; light stimulus, 179; me- 

 chanics of light response, 207. 



NAGELI, catalytic poisons, 7 ; salts of 

 metals as poisons, 14; phototaxis, 

 182 ; temperature and movement, 

 225 ; cold-rigor, 241 ; nutritive solu- 

 tion for fungi, 302 ; caesium and 

 growth, 320. 



Nais, regeneration and solutions, 365. 



Naja tripudians, acclimatization to 

 poison of, 30. 



Natica, acclimated to sulphuric acid, 

 28. 



NEAL, corrosive sublimates as poison, 

 15 ; acclimatization to poison, 30, 31. 



Nematoda, azoimid, 7 ; chloral hydrate, 

 10 ; desiccation, 61. 



NENCKI, chlorine and growth, 316 ; 

 sodium and growth, 318. 



Nephelis, effect of varying density, 81. 



Nereis, effect of cocaine, 24. 



Nerve, electric stimulation, 133, 135. 



Nicotin, and protoplasm, 23, 24. 



