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LXXII. ExtraB of a Letter from Dr. John 
Stevenfon, Phyjician at Edinburgh, to 
John Pringle, M. D . F. R , & dated 
Edinburgh, 17 Feb. 1756, with an Ac- 
count of an extraordinary Agitation of the 
Water in a Jmall Lake at Clofeburn, in 
the Shire of Dumfries ; by Sir Thomas 
Kilpatrick, of Clofeburn, Bart . 
Read Feb. 26, r 'lT~ s H E inclofed is from Sir Thomas 
1/3 ' JL Kilpatrick, a gentleman of un- 
doubted good fenfe and veracity. The lake I have 
feen long ago, but cannot be precife as to its dimen- 
fions, which I guefs may be a quarter of a mile long. 
The phenomenon happened on the firft of this 
month February, which was here the fined, clear, 
calm day we have had this winter. Till now I 
doubted of the accounts you believed, of agitations 
in ponds ; now I do not, for not only this fmall lake,, 
butfome ponds near, it were moved. 
By a letter fomedays after, there is mention made 
of two returns of thefe commotions fince the former, 
but in a moderate degree in companion with the- 
others. 9 
Sir 
