Diabrotica Jongicornis, &P-86. 



diagram of life history of, 83. 

 eggs of, 80, 81, 82, 83. 



place of deposit, 85. 

 See also under Northern Corn 

 Boot-worm. 

 Diseases, fungous, as natural check 



upon San Jose Scale, 99. 

 Dogwood subject to serious injury by 



San Jose Scale, 97. 

 Dogwoods, native, 98. 



E 



Elm, young, subject to serious dam- 

 age by San Jose Scale, 97. 



English Ivy apparently exempt from 

 San Jose Scale attack, 97. 



Evergreens exempt as above, 97. 



Fertilizers as carriers of repellents, 

 44-48. 

 which were found useless as re- 

 pellents, 41. 



Filbert apparently exempt from San 

 Jose Scale attack, 97. 



Flowering Almond subject to serious 

 injury by San Jose Scale, 97. 



Formalin, effect of treatment of seed- 

 corn with, 5, 43. 



fuscipennis, Aphelinus, 100. 



e 



Globeflower rarely seriously injured 



by San Jose Scale, 97. 

 Goldflower apparently exempt from 



attack by San Jose Scale, 97. 

 Grape rarely seriously injured by San 



Jose Scale, 97. 

 Gum, Sweet, apparently exempt from 



San Jose Scale attack, 97. 



Hazelnut apparently exempt from San 



Jose Scale attack, 97. 

 Hawthorn subject to serious injury by 



San Jose Scale, 97. 

 Hickory apparently exempt from at- 

 tack by San Jose Scale, 97. 

 Honeysuckle rarely seriously injured 



by San Jose Scale, 97. 

 Horse-chestnut rarely injured as above, 



97. 

 Huckleberry apparently exempt from 



San Jose Scale attack, 97. 

 Hydrangea exempt as above, 97. 

 Hydrocyanic acid gas for San Jose 



"Scale, 101. 



Insects as carriers of San Jose Scale, 

 98, 106. 



predaceous and parasitic, 99. 

 Ironwood apparently exempt from 



serious injurv by San Jose Scale, 



97. 

 Ivy, English, exempt as above, 97. 



Japan Quince subject to serious in- 

 jury by San Jose Scale, 97. 



June-bei'rv sul)ject to injury as above, 

 97. " ' 



Kentucky Coffee-tree apparently ex- 

 empt from attack bv San Jose 

 Scale, 97. 

 Kerosene and other oils, effect of 

 treating seed-corn with, 4, 5, 7, 

 18, 43. 

 emulsion, effect of treating seed- 

 corn with, 43. 

 to repel Corn-field Ant, 3. 



Lady beetles and larvae as enemies 



of San Jose Scale, 99. 

 Lemon oil, adulteration of, 12. 



and alcohol, insectary tests of dif- 

 ferent samples of, 15. 

 effect of treating seed-corn 

 with, 5, 7, 8-19. 

 and wood alcohol, effect of treat- 

 ing seed-corn with, 20. 

 ett'ect of treating seed-corn with, 



5, 7, 8-17. 

 and terpenes, tests of, 12. 

 terpenless lemon-oil, and pure ter- 

 penes, comparative effects of, 

 on plot-plantings of corn, 13- 

 15. 

 to repel Corn-field Ant, 3. 

 Lilac subject to serious injury by San 



Jose Scale, 97. 

 Lime-sulphur wash, 101, 102-103. 



apparatus and equipment for 

 making and applying, 104-10(). 

 care to be taken in use of, 106. 

 commercial solutions of — cost, 



etc., 104. 

 cost of home-made solution of, 



104. 

 directions for making, 103. 

 manner of spraying with, 106. 

 Linden subject to serious injury by 

 San Jose Scale, 97. 



