3^4 



Ind 



ex 



Insect injury, i8, 26, 36, 49, 52; see 

 also Insect pests 



Insect lime, see Dendrolene 



Insect pests, periodic development, 

 45; various groups, 46; character 

 of damage inflicted, 46; precau- 

 tions against, 54; combating in 

 cities, 54, 131-133; natural ene- 

 mies, 129; methods, 133; mechani- 

 cal destruction of, 144; in parks, 

 195; also 197, 206, 215 



Insecticides, 125, 134, 146; see also 

 Bordeaux mixture; Soap solution; 

 Tobacco 



Insects, biting, 134, 135; sucking, 

 134, 142; obnoxious to tree 

 growth, 149 



Iron, deficiency in soil, 62 



Ironwood, Ostrya, 192, 212, 293, 365, 



367 

 I tea, 352 

 Ithaca, N. Y., trees killed in, 142 



note 



Japanese Quince, Pirns, ig"]; see also 

 Strawberry-bush 



Japanese Storax, 355 



Japonica, Pirns, 297; see also Straw- 

 berry-bush 



Jasmine, Philadelphiis, 354 



Judas Tree, Ccrcis, iii, 211, 280, 



367 

 Juglans, Walnut, 210, 257, 259, 



260 

 June bug, 155 

 Juneberry, Amelanchicr, in, 211, 



273. 369, 370, 372 

 Juniper apple, 38; see also Rusts 

 Jiiniperits, Pencil Cedar, 209, 215, 



219, 220, 371-373 



Kainit, see Potash fertilizers 

 Kahiiia, Laurel, 293, 331, 332, 365, 



366, 369, 370, 372 

 Kentucky Coffee Tree, 256 

 Kerosene emulsion, 50, 134, 141, 



142, 150, 151, 155 156, 160 

 Kinniki)inik, Coruiis, 282 

 Kirkland, A. H., qiioled, 141 

 Knapsack pumps, 138 note, 147 

 Knots, their causes, 14 

 A' a?/rc»/fr/a. Varnish Tree, 210, 258,* 



261, 370 



Laburnum, Cytisus, 210, 259,* 261. 

 368, 370 



Lady-bugs, coccinellidas, 131 



Lady Laurel, Daphne, 358 



Lagerstra'mia, Crape Alyrtle, Fringed 

 Myrtle, 328, 362, 368, 370 



Larch, 170, 177, 195, 209, 215; 

 American, Larix, 230, 371; 

 Golden, Psendolarix, 210, 213, 229, 

 230*; Japanese, Larix, 230; West- 

 ern, Larix, 230 



Larch-moth, 166 



Larix, Larches, 209, 215, 229, 230, 

 371-373; see also Psendolarix 



Larvae, see Insect pests 



Laurel, Kalmia, 277, 332, 366, 369, 

 370, 372; Mountain, 332; Sheep, 

 332, 369; Swamp, 332 



Lawn trees, treatment of soil for, 77, 

 conditions for planting, 173, 176; 

 size, 178; contrasted with forest 

 trees, 189; also 198 



Lead plant, Amorpha, 326, 346, 

 366 



Leaf-beetles, 152, 155 



Leaf-eaters, 46, 54, 55 



Leaf-miners, 47, 165, 167, 229, 272, 

 284 



Leaf-rollers, 47, 165, 166 



Leaf-suckers, 47 



Leatherleaf, Cassandra, 327, 332, 

 366, 369, 371 



Leaves, development, 7, 10; part 

 in evaporation and assimilation, 

 17-19; breathing pores, 20; etiola- 

 tion, 53, 58, 60, 62, 73; period of, 

 204; color and form, 208; see also 

 Foliage 



LEGUMINOSAE, Pea family, 345 



Lepidoptera, see Butterflies and 

 moths 



Lespedeza, see Desnwdinm 



Leucolhde, North American Heathers 

 ^}>2>, 366, 367, 369-371; see also 

 Zenobia 



Libocedrns, Arborvitae, Incense Ce- 

 dar, 209, 215, 221 



Lichens, excessive development on 

 bark, 44; relation to disease, 53 



Life of tree, definition of term, 30; 

 comparison with animal life, 30, 

 31; causes contributing to length 

 of, 31 



