558 



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, 424. 



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, 1 76. 



Exosmosis, 14. 



Experiment, 2. 



Extensibility of the cell-wall, 420, 520. 



Factors concerned, in plant form, 339 ; in 

 plant habit, 255 ; in a mechanism, 255. 



Fats, 4, 158; as products of assimilation, 

 158; as respiratory material, 200; for- 

 mation of, from carbohydrates, 175 ; hy- 

 drolysis of, 159; as reserves, 159, 162; 

 transformation of, into carbohydrates, 

 158. 



Felspar, weathering of, 91. 



Fermentation, 214; alcoholic, of sugar, 

 208; significance of, 213; influence of 

 oxygen on, 213; material of, 208; by- 

 products in, 210 ; products of, 210; re- 

 lation to respiration of, 212 ; zymase in, 

 211 ; see also Butyric acid. Butyl-alcohol, 

 Cellulose, Acetic acid, Pectin, Organic 

 acids. 



Ferments, see Enzymes. 



Fertilization, 354, 358, 361 ; significance of, 

 367, 376 ; of the embryo-sac nucleus, 361, 

 370. 



Flanks, 276. 



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

 specific materials, 349 ; on cuttings, 364 ; 

 causes of, 363, 364; and vegetative 

 growth, 364. 



Flowering plants, functions of organs in, 

 250; differentiation and division of labour 

 in, 250 ; development of, 250 ; segmenta- 

 tion of, 250. 



Fluctuating variations, 387. 



Foliage-leaf 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 of, 331 ; 

 transference of, 331. 



Functional adaptation, 251, 331, 392; sti- 

 muli, 335. 



Fungi, influence of substratum on, 320; 

 nutrition of, see Heterotrophic plants. 



Fusion in fertilization, 354, 355, 358, 361. 



Galls, 320; of Dryophanta^ 324; due to 

 insects, 321 ; due to Fungi, 321 ; of 

 Spathegaster, 323 ; causes of, 324 ; pur- 

 pose of, 324. 



Galtonian curve, 387. 



Galvanotaxis, 551. 



Galvanotropism, 481. 



Gametes, 355. 



Gases, see Carbon-dioxide, Oxygen, &c. 



Geotaxis, 551. 



Geotropism, 429; in dorsiventral structures, 

 452 ; excitation in, 439 ; in pulvinate 



