488 



GLOSSAEIAL INDEX. 



from stomata, 302; passage of, through 

 stomata, 303; proportions of various, 

 in the air, 303 ; relations of protoplasm 

 to various, 210. 

 Gelatin, of plants, 364; tannate of, 226. 

 Gelatination, 34, 

 Genera, 447. 

 Genlisea, 346. 

 Gentian-violet, 380. 

 Geotropic organs (v^, the earth; Tpojroy, 



a turn), 392. 

 Geotropism, 392. 

 Gerlach's ammonia-cannin, 16, 

 Germination, changes during, 468; con- 

 ditions of, 462; not hastened by chem- 

 ical means, 468; of oily seeds, 368, 

 468; phenomena of, 466; relations of, 

 to light, 466; relations of, to tempera- 

 ture, 464; stages in, 462, w. ; time re- 

 quired for, at various temperatures, 

 466 ; when complete, 462. 



Girdling of stems, 258. 



Glaciers, aid of, in the formation and 

 distribution of soils, 238. 



Glands, nectar, 451 ; of the Drosera leaf, 

 339; of leaves, 161, 



Glandular hairs, 68. 



Gliadin, 364. 



Globoids {globus, a round body) 47 



Glucose (CoHijOu), 52, 359; held to be 

 the first product of assimilation, 322. 



Glucoside, 292, n., 362. 



Gluten-casein, 363, 



Gluten-fibrin, 364, 



Glycerides. See Fats, 



Glycerin, effect of, upon protoplasm in 

 cells, 199; use of, as a medium in mi- 

 croscope work, 5; use of, as a pre- 

 servative medium, 21; use of, as a re- 

 agent, 12. 



Glycerin ethers, 360, 



Glycerin-jelly, 22, 



Gold orange, 19, 



Gokl-size, 24. 



Graft-hybrids, 445. 



Grafting, JS2, 444. 



Grains of the cereals, 181, 



Granulose {grnnulum, a small grain), 

 50, 



Grape-sugar, 359. See also Glucose. 



Gravelly soil, 238, 



Great curve of growth, 38D. 



Green, brilliant, 19; emerald, 19 ; methvl, 

 19. 



Green chlorophyll, 322. 



Grenacher's alum-carmin, 17. 



Growing-point, 106. 



Growth, 355,373; assumption of definite 

 form during, 394; basifugal, 156; 

 basipetal, 156; changes which accom- 

 pany, 373; conditions of, 384; direc- 

 tion of, 392; effe<'.ts of atmospheric 

 pressure upon, . 389 ; eifects of gases 

 upon, 384; effects of light upon, 387, 

 392; effects of temperature upon, 385; 

 external pressure retards, 395; force 

 exerted during, 395; great curve of, 

 389; instances of rapid, 384; in what 

 it consists, 373; measurement of, 383; 

 not always associated with increase of 

 weight, 373; observation of, 374; of 

 the cell-wall, 218, 382; of the leaf, 

 155; periodical changes in rate of, 

 389; planes of walls at point of, 381; 

 relations of oxygen to, 388. 



Guardian cells, 70; development of, 376; 

 mechanism of, 269. 



Gum-resins, 98. 



Gums, 51, 358; diffusion of, 222, n. 



Gymnospemis (yunvd;, naked; o-n-e'pjja, 

 seed), 426, 437, 



Gynoecium (v"^'^', a woman; olcos, a 

 bouse), 426, 



H,EMATOXYLIIf (C10H14O0 + 3H,0), 18, 



46, 211, 380. 



Hairs, 68; cell-division in, 380; com- 

 pound, 68; occui'rence of, in air-pas- 

 sages, 100; of seed-coat, 179; simple, 

 68; used in study of protoplasm, 198, 



Hales, device of, for noting the growth of 

 a leaf, 156 ; experiments of, upon trans- 

 piration, 271; observations of, upon 

 the transfer of water through the 

 stem, 258, 



Hartig'scavmin, 16, 



Healing of plant-wounds, 150, 



Heart-wood (Duramen), 141. 



Heat, absorption of, by soils, 245; effect 

 of, upon the direction of growth, 394; 

 effect of, upon opening and closing of 

 stomata, 270; effect of, upon transpi- 

 ration, 277; effect of, upon vitality of 

 seeds, 205; evolution of, during res- 

 piration, 370; relations of, to germina- 

 tion, 464; relations of, to protoplasm, 

 201, See also Temperature. 



Heat-rays of the spectrum, 308, 



Heliotropic curvatures (ijAtos, the sun; 

 rpdiros, a turn), 393, 



Heliotropism, 392. 



Hepatics, absorbing organs in, 117. 



Heterogeneous pith, 124. 



