Hickory injured by White-marked 
Tussock-moth, 10. 
Hodgkiss, H. E., 1. 
Honey-locust infested by San Jose 
Scale, 59. 
by Walnut Caterpillar, 8. 
injured by Cottony Maple Scale, 
62. 
Honeysuckle infested by San Jose 
Scale, 59. 
Cottony Maple Scale on, 62. 
Hood, J. D., 71. 
Hopkins, A. D., 48, 50. 
Horn, G. H., 86. 
Hornbeams, 60. 
Horse-chestnut defoliated by White- 
marked Tussock-moth, 10. 
Cottony Maple Scale on, 62. 
infested by San Jose Scale, 59. 
injured by Oyster-shell Scale, 58. 
Horseradish injured by Limonius con- 
fusus, 14 3. 
Howard, L. O., 18. 
Hubbard, Fred, 89. 
Hulst, Geo. D., 30. 
Hydrangeas, 60. 
Hydrocyanic acid gas for Greenhouse 
White-fly, 123. 
for Lettuce Plant-louse, 133. 
for Melon Aphis, 121. 
for Onion Thrips, 138. 
for Red Spider, 126. 
fumigation with, 156-158. 
Hydroecia nitela, 147. 
Hyphantria textor, 4-6. 
Ilex infested by Putnam's Scale, 61. 
Illinois shade trees and shrubs, some 
important insects of, 1-67. 
vegetable gardening in, 99, 100. 
Insect pests of greenhouse, control 
of, 160. 
powder. See Pyrethrum. 
Insecticides, classification and sy- 
noptic list of, 149. 
preparation of, 148-160. 
Insects of Illinois shade trees and 
shrubs, 1-67. 
of the truck-farm and vegetable 
garden, 99-160. 
integerrima, Datana, 8. 
Ivy, English, 60. 
J 
Japanese Quince, infestation of, by 
San Jose Scale, 58. 
japonica, Pyrus, 58. 
Jasmine, Yellow, 60. 
Judas-tree, 60. 
juglans-regiae, Aspidiotus, 61. 
June Grass as food plant of Straw- 
berry Crown-girdler, 92. 
Juneberry infested by Viburnum Bor- 
er, 34. 
Juniper, 60. 
K 
Kelly, B. O. G., 73. 
Kentucky Coffee-tree, 60. 
Kerosene for Walnut Caterpillar, 9. 
emulsion for Cabbage Plant-louse, 
113. 
for Cottony Maple Scale, 66. 
for Onion Thrips, 124, 137. 
for Pea-louse, 140. 
for Potato Plant-louse, 145. 
for Scurfy Scale, 56-57. 
for Squash-bug, 119. 
formula for, 66-67, 153. 
Koebele, Albert, 78. 
Lace-wing fly, larva of, as enemy 
of Cabbage Plant-louse, 112. 
Lachnosterna, 75. 
fusca, 74. / 
implicita, 74. 
lactucae. Aphis, 132. 
Macrosiphum, 132. 
Nectarophora, 132. 
Siphonophora, 132. 
Ladybirds as enemies of Cabbage 
Plant-louse, 112. 
of Colorado Potato-beetle, 142. 
(See also Ladybugs.) 
Ladybugs and their larvae as ene- 
mies of Cottony Maple Scale, 65. 
Lantern-trap for moth of Variegated 
Cutworm, 131-132. 
lapathi, Cryptorhynchus, 31, 40. 
Larches, 60. 
Larsen, John, 55. 
hiticinerea, Xylina, 78, 79, 82. 
Laurel, Mountain, infested by San 
Jose Scale, 59. 
Leaf-roller, Blackberry, collecting 
and rearing of, 94-95. 
Strawberry, 86-89. 
Leatherwood, 60. 
Lepidosaphes ulmi, 57-58. 
Leptinotarsa 10-lineata, 141-143. 
Lettuce, 99, 100, 129-133. 
as food plant of Variegated Cut- 
worm, 129. 
immunity of, from wireworm in- 
jury, 144. 
injured by Greenhouse ^Vhite-fly, 
121. 
by imported Cabbage-worm, 105, 
133. 
by Lettuce Plant-louse, 132. 
Plant-louse, 132-133. 
leucostigma, Hemerocampa, 10. 
