[ z8 7 ] 
This beautiful and furprifing work of nature 
feemed, after its refurre&ion, to have no dependence 
on material food. The Cornel had recovered a new 
fet of leaves by the time the flie appeared; but it 
never touched them; and thofc that came out in 
my room, lived as long there, as the reft which 
enjoyed the open air, and the tree on which they 
were bred. If they did feed, it muft have been on 
Lome other adventurer of the air, too minute to be 
vifible to our eyes. Thofe that were confined to 
my room, difeharged a fmall drop of brown liquor, 
in which I fuppofe their eggs were contained 5 but 
as they were not depoflted in a proper receptacle, 
they did not produce worms the next year. As the 
tree is the peculiar habitation of the worm, and 
fupplies it with its only food, lo it is certainly the 
only nurfe of its egg. It is likely the eggs were 
either inferted into the fmall crevices of the bark, 
or difeharged into the little apertures, where buds 
are to fpring the following feafon. In this fituation, 
they might be moft conveniently nourifhed by the 
return of that genial juice, or fpirit, with which 
the Cornel is naturally fitted to cherifh and raife 
them into life. The flies feemed to be of a moft 
delicate conftitution in refped to heat and cold. 
The former they could bear with difficulty; the 
latter, not at all. Hardly any of them furvived the 
firft of Augaii. They loved reft, and did not care to 
flutter much about. While they were yet in their 
Nympha ftate, I brought great Lumps of them to 
my room, and thofe, which happened to be bruifed 
in pulling them from the trees, produced flies, dif- 
torted either in the wings or other parts ; but this 
P p 2 Diftortion 
