t 220 ) 
X. An Account of a Subfdence of the Ground near Folkflone f 
on the Goaf of Kent. In a Letter from the Rev. John Lyon, 
M. A. to Edward King, Efq. F. R. S. and A. S. Commu- 
nicated by Mr. King in a Letter to Charles Blagden, M. D* 
Sec. R. S.; with Remarks * 
Read February 1 6, 1786. 
TO DR. BLAGDEN, See. R. S. 
DEAR SIR, Mansfield-Street, Dec. 22, 1785, 
H AVING always thought the account given in the Phi^ 
lofophical Tranfadions, by Mr. Sackette *, abouttRe 
beginning of this century, concerning the motion of the ClifIS* 
and of the adjacent ground, near Folkflone in Kent, a very 
curious one, and deferving of much attention ; both beeaufe.of 
the many pofitive atteftations there were of ancient men with 
regard to it (who were both mariners, and ufed to obferva- 
tion) y and becaufe of the fmgular confequences that would 
follow, from the afeertaining of fuch a fad, in a philofophkat 
light ; I have conftantly, whenever I had any opportunity^ 
made repeated enquiries concerning the matter, of fuch j^r^. 
fbns as I thought likely to be able to afford me any fatisf&dpry 
information. 
* See Phil. Tranft voL XXIX. N° 3-4.9* os Jones’s Afed%p<?nt, voL IV a 
part II. jp* 248, 
AmongfJ 
