

INDEX 



Dissolution of reserves, 147-65. 



Division, of the nucleus, 268 ; of the cell, 

 269, 270 ; amount of, 271. 



Dorsiventral, 277. 



Drosera, protoplasmic aggregation in, 498 ; 

 movements in, 496 ; chemical stimuli as 

 affecting, 497; as an insect trap, 185, 

 496 ; contact stimulus in, 497 ; mechanics 

 of curvature in, 497 ; nastic and tropistic 

 curvature in, 499 ; direct stimulation in, 

 498 ; indirect stimulation in, 498. 



Drought rigor, 539. 



Dry weight, decrease of, in darkness, 191 ; 

 increase of, in water cultures, 80, 82. 



Duramen, conduction of water in, 62. 



Dynamical layers, 412. 



Ecballium.) ejaculatory movements of, 42 4. 



Egg, development of, inhibition of, 368 ; 

 development of, stimulation of, 370. 



Ejaculatory movements, of Catasetum, 426 ; 

 of ferns, 415 ; of fruits, 424 ; of Fungi, 

 423 ; of stamens, 425 ; causes of, 410, 

 415,422. 



Elastic stretching of the cell-wall, 263. 



Electricity, production of, 402. 



Electrotropism, 480. 



Elements of the ash, 80. 



Elongation, 285. 



Embryonic substance, 273 ; continuity of, 

 284 ; growth of, 284. 



Endosmosis, 13. 



Endosperm, 148, 155 ; depletion of, in ab- 

 sence of embryo, 155; depletion of, effects 

 of oxygen and chloroform on, 1 56. 



Energy, conservation of, 397 ; forms of, in 

 the plant, 397 ; sources of, 397 ; me- 

 chanical, 403 ; due to respiration, 403 ; 

 due to other processes, 404 ; transforma- 

 tion of, 2, 397. 



Enzymes, 149, 152; hydrolytic, 152; in- 

 organic, 153; catalytic action of, 152; 

 synthetic action of, 154; incomplete re- 

 actions by, 153, 154; specific action of, 

 154 ; action of, on peroxide of hydrogen, 

 153 ; oxidizing, 204 ; zymotic, 211. 



Epinasty, autonomous, 530 ; induced, 449. 



Epithem, 58. 



Equimolecular, 16. 



Ether, chemotactic influence of, 542 ; in- 

 fluence of, on assimilation, 195 ; influence 

 of, on respiration, 195, 202 ; lowering of 

 sensitivity by, 516; influence of, on the 

 formation of shoots, 345. 



Ethereal oils, 4, 176. 



Ethyl-alcohol, see Alcohol. 



Etiolation, by withdrawal of light, 304 ; 

 significance of, 306 ; by withdrawal of 

 nitrogen, 315. 



Excitation, geotropic, 438 ; heliotropic, 



469 ; conduction of, 444, 469. 

 Excreta, 176. 

 Exosmosis, 14. 



Experiment, 2. 



Extensibility of the cell-wall, 420 520. 



Factors concerned, in p'ant form 339 ; in 

 plant habit, 255 : in a mechanism. 255. 



Fats, 4, 158; as products of assimilation, 

 158; as respiratory material oo for- 

 mation of, from carbohydra es, 75 ; hy- 

 drolysis of, 159; as reserves, 59 1 62 ; 

 transformation of, into caiboayd.-ates, 

 158. 



Felspar, weathering of, 91. 



Fermentation, 214; alcoholic, of sugar, 

 208; significance of, 2 1 3 ; influence of 

 oxygen on, 213; material o<, 2 8 : by- 

 products in, 2 1 o ; products of, 210; re- 

 lation to respiration of, ?I2 ; zy n;se in, 

 211 ; see also Butyric acid, Butyl-* cohol, 

 Cellulose, Acetic acid, Pec.in Organic 

 acids. 



Ferments, see Enzymes. 



Fertilization, 354, 358, 361 ; significance of, 

 367, 376; of the embryo-sac nucl us. 361, 

 370. 



Flanks, 276. 



Flower, 349, 360 ; formation of the. due to 

 specific materials, 349; on cut i igs 364; 

 causes of, 363, 364; and vegetative 

 growth, 364. 



Flowering plants, functions of rvg;ms in, 

 250; differentiation and division ot labour 

 in, 250; development of, 250 ; s gnenta- 

 tion of, 250. 



Fluctuating variations 387. 



Foliage- ieat and scale- leaf, 349. 



Form and material, 256. 



Formal conditions, 253 427, 522 526-8. 



Formaldehyde, as a product of assimila- 

 tion, 112. 



Formation, 258. 



Formative stimuli, 298. 



Freezing, 300. 



Fruits, ejaculatory movements of, 410, 424. 



Function, inhibition of, results or, 331 ; 

 transference of, 331. 



Functional adaptation, 251, 331, 392; sti- 

 muli, 335. 



Fungi, influence of substratum on, 320; 

 nutrition of, see Heterotrophic phnts. 



Fusion in fertilization, 354, 355, 358 361. 



Galls, 320; of Dryophanta, 324 ue to 

 insects, 321 ; due to Fungi 321 ; of 

 Sp .ithegaster> 323 ; causes of. 3:4; pur- 

 pose of, 324. 



Gaitonian curve, 387. 



Galvanotaxis, 551. 



Ga vanot opisin, 481. 



Gametes, 355. 



Gases see Carbon -dioxide, Oxyg n, &c. 



Geotaxis, 551. 



Geotropism, 429; in dorsiventral t c'ures, 

 452 ; excitation in, 439 ; in ui\ inate 



