INDEX. 



571 



N.B. The numbers refer to the paragraphs. 



GRAMINEJE, 732-740 



Grape tribe, 567-571 



Grass tribe, 732-740 



Grass-wrack, 691 



Gravity, influence of, on roots, 111, 112 



Green Hellebore, 511 



Green surfaces of Plants, 286, 308 



Grenadilla, 608 



GROSSULARLE, 613 



Guano, 195 



Guava, 603 



Gulf-weed, 43 



Gum, formation of in plants, 317 ; properties 



of, 328 



Gum-resins, 378 

 Gum-tree, 604 

 Gums, 377-380; gum-arabic, 379; Senegal, 



380 ; tragacanth, 380, 554 

 Gypsum, 196 



H. 



ELEAIANTHUS, 708 



Hair-bell tribe, 637-639 

 Hairs, structure of, 96 ; uses of, in absorp- 

 tion, 278 

 Hazel, 677 

 Heart's-ease, 538 

 Heart-wood, 131 

 Heat, sustained by Plants, Introd. 



effect of on Plants, 254, 255 



emitted by Plants, 407-413 

 Helianthemum, 536 

 Hellebores, 511, 514 

 Hemlock, 617 



Hemp, 674 



Henna, 398 



Hepaticce, 32, 33 



Hepaticas, 509 



Hibiscus, 548 



Hip, or Haw, 595 



Hollow stems, 148 



Holly, 582; leaves of, 236 



Hollyocks, 548 



Honey-locust tree, 238 



Honeysuckle tribe, 623 



Hops, 147, 674 



Horned- Poppy, 524 



House-Leek tribe, 609 



Hyacinth, 712 



Hybrid Plants, 454, 476 



Hydrangea, 457, 615, 616 



Hydrocharis, 685 



HYDROCHARIDB^E, 685 



Hydrogen, a component of Vegetables, 167 



Hygrometric plants, 418 



Hypogynous stamens, 498 



IMPATIENS BALSAMJNA, 419 



Indian Fig, 610 



Indigo, 388, 389 



Insects, air-tubes of, 81-83 



Internode, 148, 302 



Involucre, 457 



Iodine, 46 



IRIDACE.JE, 705, 706 



Iris tribe, 705, 706 



Irrigation, 202 



Isatis sativa, 534 



J. 



JALAP, 652 

 Jamrozade, 603 

 JASMINES, 649 

 Jatropha Curcas, 671 

 Jatropha Manihot, 339, 671 

 Jessam ne tribe, 649 

 JUNCACEJE, 719, 720 



K. 



KALMIA, 641, 642 



Kelp, 46 



Knight, Mr., his experiments on growth of 



roots, 111, 112 

 Kyanizing, 59 



LABIATJE, 654 



Lactuca virosa, 634 



Laminaria, 42, 46 



Larkspur, 511, 514 



Latex, vessels of the, 86, 140, 199 



Lavatera, 548 



Lavender, 300 



Laver, 45 



Laurel, 667 



LAURINEJE, 667 



Layers, annual, 128-132 

 propagation by, 346 



Leafless plants, 219-223 



Leather, formation of, 365 



Leaves, general purposes of, 214, 215 ; essen- 

 tial structure of, 216-218; peculiarities of, 

 in Exogens, 232; in Endogens, 233; in 

 Ferns, &c., 229; skeletons of, 233, 234; 

 varieties of form of, 234-239 ; pinnate, &c., 

 237, 238; development of buds from, 240; 

 peculiar forms of, for collecting water, 241 ; 

 metamorphosis of into pitchers, 242-245 ; 

 internal structure of, 247-250 ; exhalation 

 by, 253-269; absorption by, 270-278; de- 

 velopment and death of, 301-313 ; arrange- 

 ment of, 302 304; changes of colour in, 

 386 ; characters derived from, in classifica- 

 tion, 495 



