560 



INDEX 



Inhibiting agents, 156. 



Initials. 371 ; latent, 374, 377, 395. 



Inorganic constituents, see Ash. 



Insectivorous plants, 184 ; movements in 

 response to stimuli in, see Drosera; diges- 

 tion of proteid by, 185. 



Intercalary growing points, 273, 291 ; 

 growth, 259-63. 



Intercellular protoplasmic threads, signi- 

 ficance of, for conduction of stimuli, 475 ; 

 significance of, for translocation of mate- 

 rials, 170. 



Intercellular spaces, 37, 104, 120, 199, 296. 



Intermittent stimulation, 439. 



Intra-molecular respiration, 203 ; relation to 

 fermentation, 207 ; products of, 203. 



Intussusception, see Cell-wall. 



Inulin, 162. 



Invertase, 152. , 



Ions, 1 6. 



Iron, 85 ; -bacteria, 224. 



Kinoplasm, 369. 



Klinostat, 430 ; theory of, 438, 449. 



Lactic acid fermentation, 217. 



Lactose, 210. 



Latent characters, 376. 



Latent period, 437. 



Lateral roots, geotropism in, 446. 



Laticiferous tubes, 172. 



Leaf-fall, 351. 



Leaves, 277 ; acropetal expansion of, 292 ; 

 assimilation of carbon-dioxide by the, 

 107, 251 ; absorption of ammonia by the, 

 137 ; materials of the ash by the, 78 ; of 

 carbon-dioxide by the, 1 20 ; of organic 

 substances by the, 112, 186; of water by 

 the, 33 ; translocation of materials from 

 the, 162; movements of, due to stimuli, see 

 Stimuli ; autonomous, see Autonomous ; 

 etiolation of, 305 ; light position of, 464, 

 466 ; regeneration of, 329 ; growth of, 

 292-4 ; formation of, 281 ; climbers, 495 ; 

 arrangement, 275 ; mechanical theory of, 



337- 



Leaves, unfolding of, 292. 



Lecithin, 4. 



Leguminosae, nitrogen fixation in, 237. 



Leucin, 140, 144, 174. 



Levulose, as a chemical stimulus, 317; see 

 Carbohydrates. 



Lichen-symbiosis, chemistry of, 243 ; mor- 

 phogenic results of, 325. 



Life, interpretation of, 254 ; causes of, 254 ; 

 conditions of, 298 ; duration of, 351. 



Light, absorption of, in carbon assimila- 

 tion, 130; influence of, in flower forma- 

 tion, 364 ; in protoplasmic movement, 

 540 ; intensity of, significance of, in car- 

 bon-dioxide assimilation, 125 ; on forma- 

 tion, 306, 310; on growth ,(30 f,~352; pro- 

 duction of, 401 ; quality of, IfltTuence of, 



in carbon-dioxide assimilation, 126; in 

 formation of chlorophyll, 311 ; in forma- 

 tion, 311; in growth, 310; direction of, 

 influence of on movements, see Helio- 

 tropism, Phototaxis ; influence of, on 

 polarity and symmetry, 310 ; as inhibit- 

 ing growth, 303 ; energy of, in relation to 

 carbon-dioxide assimilation, 130 ; amount 

 of, made use of, 3 7 ; position of leaves, 

 466; alteration in, influence of, on growth, 

 343 ; as a stimulus, see Nyctitropism, 

 Phototaxis, Apobatic. 



Lime, 98. 



Limiting angle, 449 ; in geotropism, 446. 



Lipase, 152, 159. 



Lithium, 83. 



Locomotion, 405 ; autonomous, 532 ; in- 

 duced, 532, 541. 



Longitudinal growth, 286 ; measurement 

 of, 286 ; secondary, 295 ; distribution of, 

 in the stem, leaf and root, 290, 291. 



Magnesium, 84. 



Malformations, due to mutation, 393. 



Malic acid, chemotaxis by, 543. 



Maltose, derived from starch, 150. 



Manganese, 87. 



Mannite, 1 12, 175, 179. 



Manuring, 101. 



Mass, movement of water in, 47 ; of nu- 

 trients, 170. 



Material and form, 256. 



Materials, absorption of, by land plants, 

 24 ; by the cell, 1 1, 24 ; translocation of, 

 166 ; organs concerned in, 169, 170 ; 

 causes of, 167-9. 



Maximum, see Cardinal points. 



Mechanical stimuli, see Pressure, Contact, 

 Shock, Tension. 



Mechanism, structure of, 522. 



Mechanism and organism, 255. 



Merogeny, 371. 



Metabolism, 2. 



Metamo-phosis, I, 247, 249, 256. 



Metamorphosis, due to gall insects, 320 ; 

 natural, 349. 



Metamorphosis of organs, due to correla- 

 tive influences, 330 ; due to intensity of 

 light, 310 ; due to Fungi, &c., 321. 



Metaphase, in nuclear division, 268. 



Methane, in fermentation of cellulose, 218 ; 

 derivatives of, as nutrients, 180. 



Methods of Physiology, 2. 



Micella, 407. 



Mimosa, chemical stimulation of, 516 ; 

 nyctitropic movements in, 504 ; periodic 

 movements in, 510; movements in re- 

 sponse to shock in. 516 ; significance of, 

 513; mechanics of, 514; resistance to 

 flexion in. 514 ; transmission of stimulus 

 in, 518 ; in response to wounds in, 516. 



Minimum, see Cardinal points ; law of the, 

 83- 



