INDEX 



509 



Disease, human, 404-410 



leaf, 341 



physiological, 415 



plant, 410-432 



seedling, 340 



stem, 340 



virus, 416 

 Distillation products, 322, 323 

 Divi-divi, 388 

 Dodder, 417 

 Dogbane Family, 480 

 Dogberry, 465, 466 

 Dog's tooth violet, 465, 466 

 Dogwoods, 306, 307, 476 

 Douglas fir, 264, 265, 314, 317, 



320, 324, 328, 330, 333 

 Downy mildew, 422 

 Drugs, 370-382 

 Drupe, 80 



Duckweed Family, 105 

 Dulse, 91 

 Dyes, 388-389 



Easter lily, 148 

 Egg, 54 



plant, 185 

 Elaioplast, 134 

 Elk grass, 466 

 Elm Family, 108 



Elms, 292, 293, 294, 324, 328, 332 

 Endive, 160 

 Endosperm, 75 

 English ivy, 482, 483 

 Ephedrine, 378 

 Epidermis, 8, 10, 32, 35, 36 

 Ergot, 382, 413, 424 

 Ericaceae^ 452 

 Erosion control, 123 

 Eucalyptus, 375, 476, 477 

 Euphorbiaceae, 487 

 Evening primrose, 451 



Evening Primrose Family, 451 

 Evergreen habit, 258 

 Excelsior, 328 

 Excurrent, 257 



False foxglove, 457 



hellebore, 466 



Solomon's seal, 466 

 Family, 84 



Farewell-to-spring, 451, 452 

 Fats, 131, 133 

 Fawn lily, 466 

 Fence posts, 315 

 Ferns, 34, 57, 58, 59, 60, 96, 97, 



108, 330 

 Fertilization, 54, 74 

 Fertilizers, 139 

 Fetter bush, 330 

 Fiber board, 320 

 Fibers, 119, 251, 345, 355 

 Fig, 145, 212, 213 

 Figwort Family, 456, 457 

 Fir balsam, 319, 330, 331, 332 

 Fire blight, 410 

 Fireweed, 451 

 Firewheel, 461 

 Firs, 64, 267, 268, 330, 333 

 Fission, 50, 86 

 Five finger, 445 

 Flavorings, 230 

 Flax, 146, 345, 346, 393 

 Florida moss, 214 

 Flower, 67, 69 

 Flowering plants, 11 

 Foam flower, 442 

 Food, 129 



Forest areas, 332, 333, 334-337 

 Forests, extent of, 331 



fires of, 337 



fungus diseases of, 339-341 



insect pests of, 338-339 



