482 THE GYPSY MOTH. 



No. 2. May 15, 1894. Ten caterpillars, before the first 

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

 leurn. One died on the fifth and one on the eighth day ; 

 those remaining seemed in good condition. 



No. 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 different 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 Ib. to 100 gal. of water. As this 

 neither killed the caterpillars nor burned the leaves, it was 

 repeated with a stronger solution. 



No. 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. 



Xo. 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. 



No. 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 Ib. to 50 gal. of 

 water. 



' ' ELECTRIC " INSECTICIDE. 



No. 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. 



No. 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. 



No. 3. June 2, 1894. Ten caterpillars, of the second 



