Index 
Grafted stock, 205 
Grapevines, 158 
Grass crops, 155 
Grasshoppers, 150, I51 
Great Laurel, Rhododendron, 334 
Grills around trees, 83; see also 
Guards 
Ground-beetles, 131 
Groundsel, Baccharis, 37, 326, 356, 
371-373 
Group planting, light intensity for, 
25; also 182 
Grouping of trees, important points 
in, 201 
Growth, impeded, 31, 32; rapidity 
of, 201; affected by soil, 205 
Guards, Tree, 33, 117, 118, 120, 121 
Gypsum, 78 
Gypsy moth, 162 
Hackberry, Celéis, 211, 279, 365 
Hailstones, injury by, 36 
Hairs, see Root-hairs 
Halesia, Snowdrop, Silver Bell Tree, 
T11, 327, 354, 369, 370 
Hardhack, Spirea, 328, 350, 370 
Hardiness of trees, 199, 200, 323 
Hardwood ashes as fertilizer, 80 
Hardwood forest, 190 
Hardwood trees, 193 
Hartshorn, 314 
Hawk-moths, 157 
Hawthorn, Crategus, 56, 151, 212, 
283, 284; Paul’s Double Scarlet, 
285; Siberian, 284 
Hazelnut, Corylus, 327, 358, 366, 371 
Heading in, 87 
Heaiing, see Callusing 
Heart-root, 199; see also Root system 
Heath family, ERICACEAE, 293, 
329, 334, 306, 369, 371, 372} See 
also Calluna 
Heather, North American, Levw- 
cothoe, 333, 366, 367, 369-371; 
see also Zenobia 
Hedges, suitable forms for, 219, 228, 
241, 276, 284, 287, 207, 320, 331, 
343, 344, 348, 349, 356, 361 
Heeling, 170 
Height, gradations of, 209 
Height growth, classification accord- 
ing to, 192 
Hellebore, 363 
383 
Hemlock, 26, 189, 193, 227; .\lpine, 
Tsuga, 210, 227, 228, 373; Bas- 
tard, Pseudotsuga, 210, 228 
Hercules Club, ralia, 210, 252, 371 
Hibiscus, Mallow, 327, 360, 367, 
369-372 
Hickory, Hicoria, 16, 154, 171, 1 
210, 256, 371; Bitternut, 257; 
Mockernut, 257; Nutmeg, 257; 
Pecan, 257; Shagbark, 257; Shell- 
bark, 257 
Hicoria, Hickories, 210, 256, 257, 371 
Hobble Bush, Viburnum, 340, 341 
Holly, Ilex, 25, 102, 192, 193, 212, 
366, 368, 370-373; Deciduous, 
native, 288; English, 287 
Honey Locust, Glediischia, 210, 247, 
249, 305 
Honey Mushroom, 43 
Honeysuckle, Abelia, 326, 336, 367- 
369; Lonicera, 325, 328, 336- 
338, 306, 368-371, 373; Fly, 337 
Honeysuckle family, CAPRIFOLLI.A- 
CEAE, 336 
Hop Hornbeam, Ostrya, 212, 293, 
365, 367 
Hlornbeam, Carpinus, 192, 211, 27 
Horse Chestnut, Asculus, 59, 67, 68, 
III, 118, 122, 159, 210, 364, 365, 
369, 370; Dwarf, 250 
Host-plants, 37, 43, 197, 356 
Huckleberry, 325 
Humic acids, 61 
Humus, 173 
Hydrangea, 327, 352, 353, 368, 369 
Hydrocyanic gas, 134 
Hypericum, St. John’s Wort, 327, 
301, 308-372 
Ice-pressure, damage from, 31 
Ichneumons, 130 
Inchworms, plague of, subdued by 
English Sparrow, 130 
Ilex, Holly, 212, 287, 288, 366, 368, 
379-373 
Indian Cherry, Rhamnus, 313 
Indian Currant, Sym phoricar pus, 
339, 366, 368-370, 372 
Infections, see Fungus 
Insect pests 
Ingraiting, 116 
Inheritance in form, 208 
Insect hosts, 130 
diseases; 
