15 
EXPERIMENT 4.—COPPERAS WATER. 
Dissolved 1 oz. in 1 quart of water. Used as in previous experiment. 
Result.—It does not seem to have affected the larve. 
EXPERIMENT 5.—TAR WATER. 
This water had been standing for several days in a cask partly filled 
with tar. Water applied with syringe, wetting larve and foliage. 
Result.—On first day after, none appeared to have been injured, and 
many were feeding. Five days after, the results were as on the first. 
EXPERIMENT 6.—AMMONIA WATER. 
Solution of 1 tablespoonful to 1 pint water. Drenched as in experi- 
ment 5. 
Result.—Virst day after application, none injured. Five days after, 
the situation is unchanged. 
EXPERIMENT 7.—CARBOLIZED WATER. 
Solution, 1 part carbolic acid to 123 parts water. Drenched web 
thoroughly. 
Result.—Virst day after application, none injured. Tive days after, 
situation unchanged. 
EXPERIMENT 8.—TOMATO INFUSION. 
Drenched web with strong infusion. 
Result.—First day after application, none injured. [ive days later, 
no change. 
EXPERIMENT 9.—CARBOLATE OF LIME. 
Dusted young larve and the leaves on which they were feeding, 
thoroughly. 
Result.—Virst day after application, a few seem to be dead. Second 
day, not over 10 per cent. were injured. 
EXPERIMENT 10.—SOLUBLE PINOLEUM. 
Solution of 1 part pinolenm to 32 parts water. Sprayed several col- 
onies and also adjoining foliage. 
Result.—A ter four days all seem to be active, except a small per cent. 
that were drenched more thoroughly than the rest. 
EXPERIMENT 11.—POTASSIUM SULPHIDE. 
Solution of 1 part sulphide to 500 parts water. Sprayed on young 
eaterpiilars less than one-half inch long. 
Result.—None were destroyed. 
