446 



THE GYPSY MOTH. 



No. 55. — July 11, 1894. Ten caterpillars, of the fifth 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green and lime, in the proportion of 4 lbs. each 

 to 150 gal. of water. Three pupated the second day ; one 

 died the third, one the fourth, one the fifth, two the sixth, 

 one the seventh and one the eighth day. 



Check experiment : two pupated the third, one the fourth 

 and one the sixth day. 



No. 56 (field experiment). — July 7, 1894. Ten cater- 

 pillars, of the fifth molt, were placed on willow branches 

 which had been sprayed with Paris green and lime, in the 

 proportion of 4 lbs. each to 150 gal. of water. One died 

 the fourth, one the fifth, one the sixth and one the seventh 

 day ; one pupated the ninth day ; one died and one pupated 

 the tenth day ; one pupated the thirteenth, one the seven- 

 teenth and one the eighteenth day. 



5 lbs. Each Paris Green and Lime to 150 gal. Water. 



No. 57. — April 26, 1894. Ten caterpillars, three days 

 old, were placed on lettuce leaves which had been treated 

 with Paris green and lime, in the proportion of 5 lbs. each 

 to 150 gal. of water. One died the first, two the second and 

 five the third day ; and two escaped. 



Check experiment : none dead. 



No. 58. — May 9, 1895. Ten caterpillars, six days old, 

 were placed on lettuce leaves which had been treated with 

 Paris green and lime, in the proportion of 5 lbs. each to 150 

 gal. of water. One died the second, one the third, five the 

 fourth and three the fifth day. 



Check experiment : none dead. 



No. 59.— May 28, 1894. Ten caterpillars, of the first 

 molt, were placed on lettuce leaves which had been treated 

 with Paris green and lime, in the proportion of 5 lbs. each 

 to 150 gal. of water. Two died the third, one the fourth, 

 two the fifth, three the sixth and two the eighth day. 



Check experiment : none dead. 



No. 60. — June 10, 1894. Ten caterpillars, of the second 

 molt, were placed on ehn leaves which had been sprayed 

 with Paris green and lime, in the proportion of 5 lbs. each 



