REPORT OF EXPERIMENTS AT LA FAYETTE, 
INDIANA. 
By F. M. Wkbster. 
1. — Imported Cabbage Worm. {Pieris rapcc ScL.) 
EXPEUIMENT 1.— ICE WATER. 
(August 4, 1885.) 
TcTtippTatnreof atmosphere about plants, 03^ F. Temperature of water, 
40^ F. Dreucbed two cabbage plants, uow well headed and serioiislj' 
infested. 
Result, — None perceptible. 
Experiment 2.— ICE WATER. 
Temperatnro of atmosphere, 104^ 1^. Temperataro of water, 38^ F. 
Drenched two plants. 
Result — Xono arc injured, and only seem to have been displaced. 
ExrERiMENT 3.— ICE WATER. 
Attfliist 4, 1885. — Temi)eratnre of atmosphere, 98^ F. Temperature of 
water, 3(P F. Drenched plants as before. 
Result. — A number were washed off, but none died from the effects of 
their cold bath. 
ExPERiMKNT 4.— ICE WATER. 
Temperature of atmosphere, 08^ F. Temi)eraturo of water, 34° F, 
Plant seriously infested, larvjc from | inch long to full grown. Drenched 
at 1.45 p. m., Sei)tember 11, 1SS5, by p )uri ng one quart water on head 
of plant, thoroughly wetting all l;U'va3 visible. 
Result. — At 5 p. m. all worms have returned to the leaves and are 
actively feeding. 
ExpEHiMEXT 5.— ICE WATER. 
Temperature of atmosphere, 00^ F. Temi)erature of water, 3P F. 
September 10, 1-J.45 p. m., ])')nred water from i>itcher on two plants. 
Result — On one i)lant, W()r'm>!, even tiic smallest, i incli long, were 
auinjured; on the other two small worms were found dead soon after. 
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