430 THE GYPSY MOTH. 



with Paris green, in the proportion of 2 lbs. to 150 gal. of 

 water. Five died the third, two the fourth, one the sixth, 

 one the seventh and one the ninth day. 



Check experiment : one died the fourth day. 



'^o. 56. — June 10, 1894. Ten caterpillars, of the second 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green, in the proportion of 2 lbs. to 150 gal. of 

 water. One died the second, two the third, one the fourth, 

 four the seventh and two the eighth day. 



Check experiment : none dead. 



No. 57. — June 21, 1894. Ten caterpillars, of the third 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green, in the proportion of 2 ll)s. to 150 gal. of 

 water. One died the second, one the third, four the fifth, 

 two the sixth and two the seventh day. 



Check experiment : one died the seventh day. 



]^o. 58. — June 29, 1894. Ten caterpillars, of the fourth 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green, in the proportion of 2 lbs. to 150 gal. of 

 water. Two died the second, five the third, one the fourth, 

 fifth and sixth days. 



Check experiment : one died the fourth and one the sixth 

 day. 



No. 59.— July 10, 1894. Ten caterpillars, of the fifth 

 molt, were placed on elm leaves which had been s[)rayed 

 with Paris green, in the proportion of 2 lbs. to 150 gal. 

 of water. One pupated the fifth day ; two died and four 

 pupated the sixth day ; one pupated the seventh day ; one 

 died the tenth and one the fourteenth day. 



Check experiment : four pupated and one died the fourth 

 day ; one pupated the fifth day, one the sixth, one the ninth 

 and one the eleventh day. 



No. 60 (field experiment). — July 7, 1894. Ten cater- 

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

 which had been sprayed with Paris green, in the proportion 

 of 2 lbs. to 150 gal. of water. One pupated the fourth and 

 one died the thirteenth day ; three pupated the fourteenth 

 and one died the seventeenth day ; two pu})ated the nine- 

 teenth and two the twenty-sixth day. Foliage badly burned. 



