[ 698 3 
The enfuing Night was very florrny 5 a large Quan- 
tity of Hail fell about Two in the Morning 5 and the 
Barometer was extremely low. 
Thofe are the principal Circumftances that I am 
acquainted with, relating to the late Earthquake. I 
depend upon your Candour and Goodnefs to excufe 
the loofe manner in which they are thrown to- 
gether* 
XL 1 V. 
Mr. Henry Baker F. R. S. to the Prefid ent,. 
containing an ExtraSi of a Letter from 
Mr. W. A-rderon F. R. S. concerning an 
Explofion in the Air, heard at Norwich, 
June 7. 1750. 
Read June 
17 So. 
« 5 - 
SIR , 
M R- Arderonwtitcs me Word from 
Norwich , that, on Thurfday laft, 
the 7th inftant, as he and a Friend were walking to 
take the Air, a little to the Weft ward of that City, 
they heard, about 7 o’ Clock in the Evening, a kind 
of hollow Noife, as loud as that of a large Cannon. 
Which Noife was once repeated nigh the fame Place 
as an Echo, and then continued dying as it were 
away for about half a Minute. 
They faw no Lightning, nor any Clouds, except 
a few thin whitifh ones in the Weftern Horizon. 
It was heard, he fays, by great Numbers of Peo- 
notwithftanding the 
continual 
pie in the City of Norwich, 
