San Jose Scale — Continued. 



observations and experiments on 



the, 63-79. 

 on fruits, 63, 79, 90. 

 on nursery stock, 99. 

 origin and distribution of, 87. 

 parasites of, 99, 100. 

 possible rate of multiplication of. 



64, 79. 

 results of experimental spraying 

 operations for, 71-74, 76-77, 77- 

 79. 

 safeguards against, in cities and 

 towns, 101. 

 against nursery infestation by, 

 101. 

 species liable to slight injury by, 

 under certain conditions, 97. 

 likely to be seriously injured 



by, 97. 

 which seem to be exempt from 

 attack by, 97. 

 spraying for, and most effective 



time for it, 102. 

 tests of orchard sprays for, 68-74. 

 transition zone in insecticide ex- 

 periments for, 74-76. 

 Sassafras oil to repel Corn-field Ant, 



3. 

 Scalecide, effect of treatment of seed- 

 corn with, 43. 

 Signiphora nigi'ita as parasite of San 



Jose Scale, 100. 

 Smartweed as food plant of Corn 



Eoot-aphis, 1. 

 Smoke-tree rarely injured by San 



Jose Scale, 97. 

 Snowberry subject to serious injury 



by San Jose Scale, 97. 

 Sour Cherry seldom seriously injured 



by San Jose Scale, 97. 

 Spirsea rarely seriously damaged by 

 San Jose Scale, 97. 



Squirrels as carriers of San Jose 



Scale, 98. 

 Sumac rarely seriously injured by San 



Jose Scale, 97. 

 Sweet Cherry subject to serious injury 

 by San Jose Scale, 97. 

 Gum apparently exempt from at- 

 tack by San Jose Scale, 97. 

 -scented Shrub exempt as above, 97. 



T 



Tansy oil and bone meal applied to 

 seed-corn, 45. 

 to repel Corn-field Ant, 3. 

 T'rumpet-vine apparently exempt from 



attack by San Jose Scale, 97. 

 Tulip exempt as above, 97. 

 Turpentine, effect of treating seed- 

 corn with, 17, 19. 



V 



Virginia Creeper rarely seriously in- 

 jured by San Jose Scale, 97. 



W 



Walnut seldom seriously damaged by 

 San Jose Scale, 97. 



Weeds as food of Corn Eoot-aphis, 1. 



Weigela apparently exempt from at- 

 tack by San Jose Scale, 97. 



Willow subject to serious injury by 

 San Jose' Scale, 97. 



Wisteria rarely seriously injured by 

 San Jose Scale, 97. 



Witch-hazel apparently exempt from 

 San Jose Scale, 97. 



Yellowwood apparently exempt from 

 attack by San Jose Scale, 97. 



