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X. A Letter to Sir John Pringle, Bart. 
Pr. R. S. on pointed ConduElors . 
S I R, 
Read Dec. 17, T_T A V I N G 'heard and confidered 
*77 2 ’ j[j[ the objedions to our Report, con- 
cerning the fixing pointed Condudors to the Maga- 
zines at Purfleet, contained in a letter from Mr. Wil- 
fon to Sir Charles ^Frederick, and read to the Royal 
Society, we do hereby acquaint you, that we find no 
reafon to change our opinion, or vary from that Re- 
port. 
We have the honour to be, 
S I R, 
Your mod obedient, 
humble fervants, 
December 17, 5772. 
H. Cavendifh, 
W. Watfon, 
B. Franklin, 
J. Robertfon. 
XI. JJlro- 
