[ 7^5 ] 
LIV. 
Extracts of Letters from Maurice Johnfon, 
Efq\ P reft dent of the Gentlemens Society 
at Spalding, and from John Green Efq\ 
Secretary of the fame , to Emanuel Men- 
dez da Coda, Efq\ F.R.S. concerning an 
Earthquake felt on Aug. 23. 1750. 
Ex trait of a Letter from Maurice Johnfon, Efy, 
to Emanuel Mendez da Coda, F. R. S. dated at 
Spalding in Lincolnlhire, z^th Augud 175-0. 
Read Nov. i. /\N Thurfday the 23d Indant, the Air 
I75 °‘ mild and calm, no Wind (lining, 
the Sun fhining bright, at about 45- Minutes pad 6 
o' Clock in the Morning, a Shock of an Earthquake 
was fenfibly felt here, and hereabout, attended 
with a loud Noife, and Crack (as fome call it) : This 
was perceived both Southward, and Northwardly, 
for fome Seconds. A Gentleman from Newark in 
Nottinghamshire , N. E. of us about 30 Miles, fays 
it was alfo felt there. 
Extrait, concerning the fame Earthquake , from a 
Letter of Dr. John Green, of the faid Place . 
T H E Earthquake was fenfibly felt through the 
whole County of Lincolnjhire , which is above 70 
Miles j but mod drongly on the Coad. The Weather 
had been for fome Days before mild and calm : An 
Aurora 
