INSECTS. 



101 



a gill of the mixture upon a common dinner plate which 

 was set on a board six iiiclics square fastened to a stake in 

 height a little above the plants. The next morning from 

 eighteen to thirty-five of the insects were found in each plate. 

 "Following it up a* few days, the crop ceased to be infested. 

 A very few plates would be sufficient, as the odor of the 

 mixture attracts the insects from a great distance and 

 alighting on it in their eagerness to feed its adhesive na- 

 ture prevents escape. The light wood fires would also 

 probably serve the same purpose. 



Where the worm has eaten the ear a secure retreat is 

 afi'orded to many other insects, and as the dampness from 

 the exuded sap favors the growth of mould, the remainder 

 of the ear is thus destroyed. — (Pat. Off. Rep., 1854.) 



Frocris Americana. — The caterpillars of the American 

 Procris are very destructive to the foliage of grape-vines, 

 late in the season, injuring it as if scorched' by fire. The 

 larvse are found in companies of several together under- 

 neath the leaves, feeding side by side upon the substance, 

 leaving only the stalk and large ribs untouched. The 

 eggs are deposited in clusters, and the caterpillars are 

 from five to six tenths of an inch in length, covered with 

 short hairs, which are longer on the second and last seg- 

 ments ; they are of a yellow color, spotted with distinct 

 black spots, and attain their growth in twelve or fourteen 

 days. There are several broods in a season. The cocoons 

 are whitish, oblong, oval and flattened, with a chestnut 

 brown chrysalis. The moths measure nearly an inch 

 across the expanded wings, and are of a blue black color 

 except the collar, which is orange. Destroy the caterpillars, 

 by syringing the infested leaves with whale oil soap in 

 solution, and crush by trampling those that fall to the 

 ground ; oi by picking off the infested leaves by hand, and 



