i 7 00 ] 
XLV. 
An Account of Part of a Roof of a Pot- 
houfe at Lambeth being flung down by the 
Earthquake, March 8. 1 749-50. com* 
municated by Mr. Wm. Jackfon, P otter , 
to C, Mortimer, M.D. Seer. R. S. 
Read June 21. A T a Pot-houfe belonging to Mr. 
Oad in Gravel-Lane , a large Part 
of the Roof, containing near two Square, . was in,- 
tirely thrown down by the lalt Earthquake ,. March 
8. 17 fo. and feveral Fifhermen, then at Work, 
imagined a Porpoife, or fome other- large Fifh, had ; 
rifen under their Boat. 
XLVI. 
Ext raff of Letter a from Dr. Mackenzie 
to Dr. Mead F. R. S. concerning Earth- 
quakes at Smyrna. 
Read July 5. 
175°. 
Conftaiitinoplv, May 23 . 1 7 50. 
I Obferve, Sir, in Mr. Touchit’s Journal, 
that a certain ingenious Gentleman 
would not allow the laft Shock of an Earthquake 
in London to be an Earthquake, becaufe it was not 
central j but rather calls it an Airquake, becaufe it 
was lateral. 1 have felt many Shocks, fince I have 
been in this Country j particularly in Smyrna 1739. 
when. 
