250 CULTURE OF THE GRAPE. 



that, in 1823, the rose-bug appeared upon a solitary apple- 

 tree " in such vast numbers as could not be described. . . . 

 Destruction by hand was out of the question." He shook 

 them down upon sheets, and burned them. "Eighty-six 

 of these spoilers were known to infest a single rose-bud, 

 and were crushed by one grasp of the hand." Owing to 

 this ease of its destruction, we can with certainty protect 

 ourselves against the ravages of the bug. According to 

 Dr.. Harris, the male bug becomes exhausted in from 

 thirty to forty days, and perishes ; while the females en- 

 ter the earth, lay their eggs, re-appear, linger for a few 

 days, and die also. The number of eggs deposited by 

 each bug is about thirty, at a depth of one to four inches 

 below the surface. They are globular, whitish, about one- 

 thirtieth of an inch in diameter, and are hatched in twenty 

 days after they are laid. The young larva? are of a yellow- 

 ish-white color, with six short legs ; and attain a full size in 

 autumn, when they are three-quarters of an inch long. In 

 October, they descend below the frost, and pass the winter 

 in a torpid state. In the spring, they approach towards the 

 surface ; and each grub forms an oval cell by frequently 

 turning around so as to compress the earth, and make 

 it hard and smooth. In the month of May, the grub 

 is transformed into a yellowish-white pupa, with short 



