482 



THE GYPSY MOTH. 



Xo. 2. — May 15, 1894. Ten caterpillars, before the first 

 molt, were placed on a leaf and sprayed with chloro-naptho- 

 leum. One died on the fifth and one on the eio:hth dav : 

 those remainino: seemed in o'ood condition. 



Xo. 3. — May 15, 1894. Ten caterpillars were placed in 

 a dish and sprayed with chloro-naptholeum, and then placed 

 on a fresh leaf. Fresh leaves for food were given them at 

 four difi'erent times. One died on the fourth day and one on 

 the sixth day ; those remaining were in good condition. 

 The strength of the chloro-naptholeum used in this trial was 

 in the proportion of 1 lb. to 100 gal. of water. As this 

 neither killed the caterpillars nor burned the leaves, it was 

 repeated with a stronger solution. 



Xo. 4. —May 22, 1894. Ten caterpillars, before the first 

 molt, were placed on a leaf which had been sprayed with 

 chloro-naptholeum. One died on the fifth, two on the sixth, 

 two on the seventh, two on the eighth and one on the ninth 

 day ; the remaining two were alive and in good condition 

 at the end of thirteen days. 



^s'o. 5. — May 22, 1894. Ten caterpillars, before the first 

 molt, were placed on a leaf and both sprayed with chloro- 

 naptholeum. One died on the fourth, three on the sixth 

 and six on the eighth day. 



Xo. 6. — May 22, 1894. Ten caterpillars, before the first 

 molt, were placed in a dish and sprayed with chloro-nap- 

 tholeum, and then placed on a fresh leaf. Three died on 

 the third, one on the fourth, three on the fifth and three on 

 the sixth day. The strength of the chloro-naptholeum used 

 in this trial was in the proportion of 1 lb. to 50 gal. of 

 water. 



Electric" IjsSecticide. 



Xo. 1. — June 22, 1894. A leaf was sprayed with elec- 

 tric insecticide, and ten caterpillars, of the second molt, 

 placed upon it. Six died on the second and four on the 

 third day. The leaf was badly burned. 



Xo. 2. — July 22, 1894. Ten second-molt caterpillars 

 were placed on a leaf and sprayed with electric insecticide. 

 All died on the second day. Leaf badly burned. 



Xo. 3. — June 2, 1894. Ten caterpillars, of the second 



