546 



NEW YORK STATE MUSEUM 



EXPERIMENTS WITH 



DATE 



PARIS GREEN, 1 LB. to 100 GAL. 

 35 GR. TO 2 QTS (1) 



LONDON PURPLE, 1 LB. TO 100 GAL 

 35 GR. TO 2 QTS (2) 



PARAGRENE, 1 LB. TO 100 GAL. 



35 GR. TO 2 QTS (3) 



1899 



My 4 



Leaves sprayed about 4.45 

 p. m. 



Leaves sprayed about 4.45 

 p. m. 



Leaves sprayed about 4.45 

 p. m. 



5 



A number of holes have al- 

 ready been eaten in the 

 leaves. 



Beetles apparently have eaten 

 nothing. 



A few beetles on the leaves 

 but no signs of feeding. 



6 



Beetles have fed quite a 

 little, spray nearly dry. 



Beetles have not fed so much 

 as in no. 1, leaves wet with 

 spray. 



Beetles have fed little, spray 

 nearly dry. 





Beetles feeding freely, one 

 on its back and just alive, 

 spray has dried. 



Beetles have apparently fed 

 but little, 2 dead, spray has 

 dried. 



Beetles fed some, spray dry. 

 Leaves eaten less than in 

 either no. 1 or 2. 



8 



3.55 

 p m. 



Beetles feeding rather freely, 

 1 dead. 



More foliage was eaten than 

 in other cages with poi- 

 soned leaves. 1 nearly 

 dead, but 8 found. Fresh 

 leaves supplied. 



3 dead, but little eaten appar- 

 ently. 



Very little of the old foliage 

 eaten, beetles possibly may 

 have died from other causes 

 Than poison. Fresh leaves 

 supplied. 



1 dead, leaves apparently 

 eaten but little. 



Old leaves eaten but little. 

 Fresh leaves supplied. 



9 



Considerable eaten, 2 dead, 1 

 nearly so. 



Beetles feeding considerably. 



Considerable eaten. 



10 

 1.30 

 p.m. 



4 dead, remainder feeding 

 freely. 



2 dead, others feeding freely. 



3 dead, others still feeding. 



11 



1 dead, remaining one on 

 leaf 



1 nearly dead. 



2 dead, 3 nearly so. 



12 



1 dead. 



3 dead. 



4 dead. 



13 









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18 









