454 



INDEX 



Forage plants, 316 



Forestry, 342-357 



Forests, Alaskan, 353 ; Canadian, 

 347,3535 Hawaiian, 353 ; national, 

 344; of the United States, 344- 

 346, 351-353; Porto Rican, 353; 

 private, 346; state, 346 



Fruit coat, 10, 163 



Fruit, of bean, 151, 152; of cucum- 

 ber, 9; of Indian corn, 163-165; 

 of lily, 288 



Fruits, 132, 137, 283-290 



Fucus, 50 



Funaria hygrometrica, 86, 87 



Fungi, 37, 312, 373; alga-like, 374; 

 basidium, 83-85, 374;. bracket, 

 83, 84; disease-producing, 373; 

 imperfect, 374; sac, 374 



Gametes, male, of bean, 149; of 



pine, 126 

 Gametes, of bread mold, 57; of 



fern, 104, 105 ; of moss, 88, 89 ; 



of rust, 62, 63 ; of Spirogyra, 46, 47 

 Germ tube, 64, 67 

 Ginkgo, 136 

 Girdling, 214 

 Gladiolus, corm, 201 

 Glandular hairs, 231 

 Gooseberry, rust, 72 

 Goosefoot family, 302 

 Gossypium, 307 

 Gourd family, 10, 310 

 Gourds, 10 

 Grafting, 224-227 



Grape, black rot, 384 ; downy mil- 

 dew, 379 

 Grapes, 306 



Grass family, 166, 195, 296 

 Gravity, influence on growth, 183, 



194, 195, 200 

 Ground hemlock, 134 

 Growth, of leaves, 228; of roots, 



183-185; of stems in length, 186; 



of stems in thickness, 115-118, 



138, 2.99 



Gums, 322 

 Gutta-percha, 213 

 Gymnosperms, 132, 153, 312 



Habits, formation of, 253 



Hairs, 5, 220, 230, 244; glandular, 



231 



Hay fever, 341 

 Head, 265 



Heartwood, 118, 208 

 Heath family, 308 

 Hemp, 326 

 Herbs, 1 88 

 Hollyhocks, rust, 72 

 Honey locust, thorn, 206 

 Horse-chestnut, fall of leaves, 254; 



winter buds, 217 

 Horse-tails, 109 

 Husks of Indian corn, 160 

 Hyacinth, bulb, 201 

 Hybrids, 280-284, 369-371 

 Hygrophonis virgineus, 82 



Immunity, 25, 26 



Indian corn, 156-168; pollination 



of, 277; root tip, 169; rust, 70; 



smut, 385-387 

 Indian pipe, 182 



Insect pollination, 146-148, 268-270 

 Integuments, 123, 124, 126, 128, 



144, 145, 160 

 Internodes, 186 

 Iris family, 300 



Jack-in- the-pulpit, flower, 260 

 Japanese ivy, 205 

 Jimson weed, 337 

 Johnson grass, 332 

 Junipers, rust, 69, 70-72 



Kelps, 50, 51 



Kernel of Indian corn, 163-165 ; 



germination of, 165 

 Kohl rabi, 369 



