454 
Erythrozym, 248, 254 
Etiolation, 360 
Etiolin, 148; in photosynthesis, 
157, 174; antecedent of chloro- 
phyll, 267, 360 
Euonymus, 148, 266 
Euphorbia, 231 
Ewart on inhibition of chlorophyll 
apparatus, 158 
Exhaustion, 408 
Exodermis, 21 
Fat, 129; origin of, 170 as reserve 
material, 240; digestion of, 254; 
secretion of, 265 
Fatigue, 408 
Fermentation, 301, 325 
Fermentative power of protoplasm, 
302 
Ferments (soluble), see Enzymes ; 
(microbic), 301 
Fern, skeleton of, 25, 26 
Fertilisation, 425, 438; stimulating 
effect of, 447 
Fimbristylis, 27, 29 
Flaccidity, 64 ; removal of by inject- 
ing water 91, by checking tran- 
spiration 96 
Flagella, 2 
Flowers, opening and closing of, 
314, 376 
Fluorine, 175 
Food, its nature, 118; formation of, 
141; conditions of continuous 
formation of, 222 
Food materials, relation to food, 
121; mode of absorption, 126, 
128 
Formaldehyde, as stage in photosyn- 
thesis, 151, 154; in construction 
of protein, 167 
Formic acid, 154 
Free-cell formation, 416 
Frost, action of, 327 
Fruit, formation of, 447 
Fucacee, 425 
Fungi, composition of cell-walls of, 
40; constructive powers of, 184; 
digestive powers of, 194; haus- 
toria of, 205 
Funkia, 239 
Fusarium, 250 
Gametangia, 423 
Gametes, 421 
Gametophyte, 426 
VEGETABLE PHYSIOLOGY 
GaRREav on absorption of oxygen 
by plants, 286 
Gaseous interchanges, 103 
Gases, mode of absorption of, 103; 
movements of, in plants, 113,114; 
currents of, affected by external 
conditions, 116; absorption of, 
137 
Gaultherase, 248, 254 
Gautier on chlorophyll, 144 
Gelatin, 160 
Gemme, 417 
Gemmation, 413 
Geotropism, 380, 394 
Germination, of pollen, 444; of 
seeds, 448 
Ginkgo, antherozoids of, 437, 446 
Glands, 245 
Gliadin, 164, 238 
Globoids, 237 
Globulin, 162 
Glochidia, 441 
Glucase, 248, 250 
Glucosides as reserve material, 238 
Gluten, 237 
Glutenin, 164, 238 
Glycogen, 232 
Gonidangia, 419 
Gonidia, 419 
Grafting, 205 
Grape-sugar as reserve 
233 
Grasses, construction of stem of, 
109 
material, 
Growing-points, 76, 308 
Growth, 210, 304; localisation of, 
305, 308, 313 ; conditions of, 308 ; 
course of, 309; grand period of, 
310, 313; of leaf, 312; daily 
period of, 313, 353 
Gums, 51 
Haustoria, 201, 205, 842 
Health, 358, 365 
Heat, liberation of, 276; absorption 
of, 321; conduction of, 325; 
regulation of, 326; resistance to, 
328 
Heaths, rolled leaves of, 338 
Hedysarum, 354; also see Desmo- 
dium 
Helianthus, 91 
Heliotropism, 377, 394, 395 
Hepatice, 391 
Heterospory, 429 
Heterostylism, 443 
Honey, 440 
Hop, 387 
