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 larvse. 
Experiment 5.— TAR WATER. 
This water had been standing for several days in a cask partly filled 
with tar. Water applied with syringe, wetting larvse 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 . — First 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 . — First day after application, none injured. Five days after, 
situation unchanged. 
Experiment 8.— TOMATO INFUSION. 
Drenched web with strong infusion. 
Result . — First day after application, none injured. Five days later, 
no change. 
Experiment 9.- CARBOLATE OF LIME. 
Dusted young larvm and the leaves on which they were feeding, 
thoroughly. 
Result . — First day after application, a few seem to be dead. Second 
day, not over 10 percent, were injured. 
Experiment 10.— SOLUBLE PINOLEUM. 
Solution of 1 part pinoleum to 32 parts water. Sprayed several col- 
onies and also adjoining foliage. 
Result . — After 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 
caterpillars less than one-half inch long. 
Result . — None were destroyed. 
