[ 620 } 
Xill. 
Martin Clare Efq-, F. R. S. to C. Mortimer 
M. D. & Seer. R*S. of the fame* 
SIR , 
Read March 8. A s I was walking this Morning in my 
‘749'5°- Garden at Kenjington Gravel-Pits,. 
about 40 Minutes after y by my Watch, I felt an 
exceeding great Shock, a Succuffion of the Earth,, 
attended with an Explofion that, I fanfv, refembled 
the blowing up of a Mine, and with the fame kind, 
of Noife. It was follow'd by a Trembling, very 
brisk at firft, which gradually abated;- and in 
about 3 Seconds, as near as I can judge, totally 
ceafed. The Tremor was attended with the Noife. 
of a diftant Thunder,, which, with the. Motion, gra? 
dually died away. 
I am not certain the Building near me moved j 
but I fanfied it did. My Feet I am fure felt great 
Emotion; and a large Watering-pot, of 9 Inches. 
Bafe, that flood near me, was thrown all along, the 
Moment the Trembling ceafed. 
This Communication I thought would be ac- 
ceptable, from, 
SIR, 
March 8 , 1749 - 5 °* 
Tour obedient humble Servant , 
M. Clare. 
*P. S. I have fince difeover’d that my Watering-pot 
was overfet by a Brick that was thrown off the 
Houfe by the Shock. 
’ ‘ XIV: 
