INDEX 
591 | 
All numbers refer to pages, heavy type indicating illustrations. 
Hepatics, 513 
Herb, 330 
Herbaceous, 333 
Herbaceous Ferns, 535 
Herbage-vegetables, 35, 53 
Herbs, 306 
Heredity, 572 
Heterocyst, 474 
Hevea = guyanensis, 
Rubber-tree 
Hickory, 376, 414, 415; nut, 35, 
120, 125; shagbark, 41; splints, 
241; wood, 260 
Higher dicots, 397, 401 
Hip, 364 
Hippocastanacee, Horse-chestnut 
Family 
Hockey-sticks, 245 
Holly, 212 
Holly Family, 399: Christmas 
holly, 212 
Holophyte, 495 
Homologies, 326, 327 
Homologous parts, 326 
Homologues, 326, 327 
Homology, 326 
Honey, 303 
Honeysuckle Family, 401: elder 
197 
Hoops, 259 
Hops, 156, 157, 170 
Hordeum sativum, var. distichon, 
Barley, Two-rowed; var. hexas- 
tichon, Barley, Six-rowed ; var. 
vulgare, Barley, Common 
Hormogonia, 475, 510 
Horned-liverwort, 517, 522, 523 
558 
Brazilian 
Horned-liverwort Family: horned- 
liverwort, 522, 523, 558 
Horn substitute, 284 
Horsechestnut Family, 399 
Horseradish, 137, 141, 144, 177, 
362 
Horticultural hybrids, 430 
Hose, 284 
Host, 211, 494 
Hot springs 
475 
House-furnishing, 223 
Hubbard Squash, 81 
Hubs, 259, 263 
containing alge, 
Human life contrasted with plant 
life, 575 
Human welfare dependent. upon 
a knowledge of plants, 575 
Humulus Lupulus, Hops 
Husk, 11, 235 
Hybrids, 430 
Hydrocarbon, 
287 
Hydrogen, 570 
Hymenea_ Courbaril, 
tree 
Hymenium, 503 
Hypha, 496 
Hypogenous floral organs, 350, 355 
Hysterophyte, 495 
284; oxidized, 285, 
Courbaril- 
Ice age, 432 
Iceland Moss, 163, 165, 
504, 505, 506, 507 
Ignorance not to be argued from, 
453 
Ilex Aquifolium, Christmas Holly 
Illicium anisatum, Star Anise 
Illuminating gas, 298, 301 
Illuminants, 295, 297 
Imbricate estivation, 349, 354 
Imitation of feeding, 563; of vital 
processes, 564 
Immanence of God, 569 
Imperfect flowers, 13, 347 
Implements, 245, 259, 260, 263. 
Incandescent lamp filaments, 228 
Indehiscent fruits, 351 
Indeterminate inflorescence, 344, 
352 
India ink, 294 
Indian, corn (see Maize); hemp, 
180, 181; poke, 199, 390, 424, 
425; tobacco, 201, 202, 384, 418, 
419° 
India-rubber, 283 
India-rubber tree, 282 
Indican, 292 
Indigestible seeds for dissemina- 
tion, 560 
Indigo, peal 291, 562; blue, 292; - 
white, 2 
Indigofera elt Dyer’s Indigo 
Shrub 
Indigo Shrub, Dyer’s, 292, 293, 
366, 408, 409 
169, 395, 
