( 1*9 ) 
VIII. A Letter from Mr. Richard Lewis, at 
Annapolis hz Maryland, to Mr. Coilinibn, 
F. containing the Account of a remarka- 
ble Generation of Infers - y of an Earthquake j 
and of ah Explofion in the Air. 
SIR, 
Annapolis OB. 27, 1 7 3 v 
in Maryland.. 
I Send you herewith fome Leaves of a Fly-Tree (fa- 
it is call'd by fome People) from whence vaft 
Swarms of Flies have been obferved to iffue ; having 
heard ftrange Stories about it, I defired a Perfon who 
went to fee it, to bring me fome of the fly-bearing 
Leaves ; about the latter End of fane laft he brought 
me fome Leaves, on which was fix’d a toueh little 
Bag, as big as the Hulk of a Philbert, but is now 
very much fhrunk with drying. It was of a dulky 
green Colour; I cut it open, and a Fly, like a Gnat, 
came out of it; I difcover’d no more Flies, 'till look- 
ing at it with a Glafs, I could difcern fomething mov- 
ing amongft the bluifh Pulp, and after a while ob- 
ferv’d that it contain’d many red Grubs, very fmall,, 
without Wings ; I bound up the Nidus , and next 
Morning the Grubs had gotten bluifh Wings, and 
their Body was of a gray ifh Colour ; there was a great 
Number of them, but they foon flew away. I went to 
fee the Tree; its Bark and Leaf refembles a Male Mul- 
berry, the Leaves were plentifully flock’d with thefe 
Bags ; I open’d feveralof them which were plentifully 
flock’d with thefe Infers, Amongft all the Excrefenees 
- which 
