INDEX 



501 



to, 207-209; retarding effect on 

 growth, 416-423 ; accelerating effect, 

 423-427 ; phototropism, 436-445. 



Lille, temperature and growth of 

 tadpoles, 459. 



Limax, geotaxis, 118-120. 



Limnsea, poisoned hy azoimid, 7 ; ac- 

 climatization to density, 85 ; light on 

 growth of, 426 ; extent of medium 

 and size, 474. 



Linum, light and growth, 428. 



Lithium and growth, 318. 



Lobster, copper in blood, 324 ; heat 

 and growth, 458. 



Locke, metallic salts as poisons, 14, 15. 



Locomotion, interference with normal, 

 51 ; determination of direction, 32, 

 66, 89, 105, 114, 140, 180, 258. 



Locust, heat and growth of, 458. 



LoEB, ohemotaxis, 33 ; oxygen attracts 

 fly larvae, 38 ; gravity and mverte- 

 brates, 118 ; effect of light intensity, 

 179, 197 ; phototaxis, 198 ; photo- 

 taxis and temperature, 200 ; light 

 attunement, 200 ; phototaxis, 204, 

 206, 208 ; temperature and irritabil- 

 ity, 230 ; thermotaxis, 258-261 ; rSle 

 of water in growth, 304 ; oxygen 

 and growth, 306 ; potassium and re- 

 generation, 319 ; magnesium and 

 growth, 323 ; growth and density, 

 364 ; contact and growth of stolons, 

 370 ; cutting and rate of growth, 

 376 ; thigmotropism in hydroids, 382 ; 

 rheotropism, 388 ; geotropism in hy- 

 droids, 399, 400 ; phototropism in 

 animals, 442, 443. 



LoEW, effect on protoplasm of oxy- 

 gen, 2 ; potassic chlorate, halogens 

 and sodic ohromate, 4 ; arsenical 

 salts, 5 ; catalytic poisons, and azoi- 

 mid, 7 ; sulphonal, 10 ; carbonic di- 

 sulphide and inorganic acids, 12 ; 

 soluble mineral bases, 13 ; salts of 

 heavy metals, 14, 15 ; hydroxyla- 

 mine, substitution poisons, 15 ; com- 

 plex nitrogenous compounds, 16; hy- 

 drocyanic acid, 19 ; aldehydes, 20 ; 

 ethylaldehydes, 21 ; sodic fluoride, 

 21, 22 ; alkaloids, 22, 23 ; acclimati- 

 zation to poisons, 27 ; oxygen and 

 growth, 294 ; phosphorus and growth, 

 314. 



LoMBAEDiNi, effect of- electricity on 

 development of chick, 405. 



Lubbock, ohemotaxis, 33 ; effective 

 wave-lengths in phototaxis, 203, 205. 



LuDLOFP, electrotaxis, 141 ; theory of 

 electrotaxlis in Ciliata, 145. 



Macaike, fieat and metabolism, 222. 



Macallum, iron in growth, 321. 



MacDoknell, light on frog's growth, 

 425. 



MacDodgal, contact response of ten- 

 dril, 378, 379. 



McLeod, electricity and plant growth, 

 407. 



Maggi, food of Amoeba, 328. 



Magnesium, and growth, 323. 



Magnetropism, 413. 



Maize, silicon in, 324. See Zea. 



Malic acid, chemotactic, 37, 38. 



Mammals, quinine, 27 ; foods of, 330. 



Man, acclimatization to poisons, 28 ; 

 sulphur as food, 315. 



Manganese, and growth, 321. 



Manganic acid, poison, 3, 4. 



Marine organisms, effect of fresh water 

 on, 79 ; foods of, 303. 



Maemiee, immunity, 30. 



Marshall, phototaxis, 194. 



Maktin Saint-Ange, rSle of water in 

 growth, 284. 



Massaet, effect on protoplasm of par- 

 aldehyde and formaldehyde, 21 ; 

 cocaine, 24 ; antipyrin, 27 ; ohemo- 

 taxis, 33, 34 ; isotonic coefficients, 

 73, 74 ; density and protoplasmic 

 structure, 76, 80 ; acclimatization to 

 density, 86-88; tonotaiis,- 89-92 ; 

 phosphorescence, 98 ; thigmotaxis, 

 106, 107 ; gravity and Protista, 114- 

 116, 121 ; phototaxis, 200. 



Matthias. See Heemann. 



Maupas, light and growth of Infuso- 

 ria, 422. 



Matee, absorption of heat by plants, 

 170 ; temperature and metabolism, 

 222. 



Mechanics of response, 45. 



Meltzke, shaking bacteria, 99, 371. 



Mendelssohn, change of optimum, 

 254 ; thermotaxis, 258, 259. 



Metabolism, modification by poisons, 

 1-27 ; by dryness, 59 ; molar agents, 



