442 THE GYPSY MOTH. 



No. 32 (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 IJ lbs. each to 150 gal. of water. One died 

 the fourth day ; one died and one pupated the seventh day ; 

 one pupated the ninth, one the thirteenth, one the sixteenth, 

 two the eighteenth, one the twenty-sixth and one the twenty- 

 eighth day. 



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



No. 33. — 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 2 lbs. each 

 to 150 gal. of water. Three died the second, four the third 

 and three the fourth day. 



Check experiment : none dead. 



No. 34. — May 9, 1894. Ten caterpillars, six days old, 

 were placed on lettuce leaves which had been treated with 

 Paris green and lime, in the proportion of 2 lbs. each to 

 150 gal. of water. One died the second, five the third, two 

 the fourth and two the fifth day. 



Check experiment : none dead. 



No. 35.— 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 2 lbs. each 

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

 one the fifth, two the sixth, four the seventh and one the 

 eighth day. 



Check experiment : none dead. 



No. 36. — June 10, 1894. Ten caterpillars, of the second 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green and lime, in the proportion of 2 lbs. each 

 to 150 gal. of water. One died the second, one the fourth, 

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



Check experiment : none dead. 



No. 37. — June 21, 1894. Ten caterpillars, of the third 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green and lime, in the proportion of 2 lbs, each 

 to 150 gal. of water. Two died the second, two the third, 

 one the fifth, three the sixth and two the seventh day. 



