OPERATIONS OF THE INSECT IN WINTER. 73 



leaves, and in wet weather the flies were to be 

 found under them for shelter. 



THE MANNER THE INSECT OPERATES ON THE 

 ROOTS IN WINTER. 



Par. 85. In the autumn I discovered many 

 of the insects crawling about the ground ; they 

 would enter the cavities close to the apple 

 roots, that are caused by the wind blowing the 

 trees backwards and forwards : at this sea- 

 son, I have no doubt the insect is sufficiently 

 sensible that the approaching cold season will 

 not admit of her young surviving through the 

 winter on the trees, and consequently makes its 

 way to the roots for warmth ; for in the winter 

 season, I have often found the insect in its white 

 state on the roots under ground; but these 

 always appear very small and weakly, compared 

 to those in warm summer weather, and the fly 

 appears to have great strength for its size, as I 

 have seen it force its way into the earth ; in a 

 most astonishing manner; but this singula r 

 insect, the large fly, I have brought to its per- 

 fect winged state, in a glass, .since I wrote the 

 foregoing pages, which I now have by me, and 

 likewise the piece of the tree where it had formed 

 itself into a chrysalis ; I kept the fly alive nine 

 days. 



