438 



THE GYPSY MOTH. 



I lb. Each Paris Oreen and Lime to 150 gal. Water. 



No. 9. — 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 | lb. each 

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

 and two the fourth day. 



Check experiment : none dead. 



No. 10. — 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 | lb. each to 150 

 gal. of water. Two died the second, five the third and three 

 the fourth day. 



Check experiment : none dead. 



No. 11.— May 2, 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 | lb. each 

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

 the seventh, two the eighth and two the ninth day. 



Check experiment : none dead. 



No. 12. ■ — June 10, 1895. Ten caterpillars, of the second 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green and lime, in the proportion of | lb. each 

 to 150 gal. of water. Two died the sixth, six the seventh 

 and two the eighth day. 



Check experiment : none dead. 



No. 13. — 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 J lb. each to 

 150 gal. of water. Four died the fifth, one the sixth, four 

 the seventh and one the eighth day. 



Check experiment : none dead. 



No. 14. — June 29, 1894. Ten caterpillars, of the fourth 

 molt, were placed on elm leaves which had been sprayed 

 with Paris green and lime, in the proportion of J lb. each 

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

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



Check experiment : one died the fourth day. 



JSTo. 15. — July 11, 1894. Ten caterpillars, of the fifth 



