. C 3«s ] 
moved, I believe I may now with freedom offer this 
very curious cafe to the attention of the Society. 
I am, 
S I R, 
Your moft obedient humble Servant, 
John Pringle. 
Pojlfcript to Dr. Whytth Ob [creations on Lord 
Walpole’* Cafe *. 
9 
Read Dec. 8, << T Do not know, if it be worth while 
' 757 - “ A t0 obferve, that lately, in making 
“ fome experiments with different calculi , there was 
“ one almoft as white as chalk, but of a lefs hard 
“ fubftance than the others ; and which was not 
tx in the lead degree diffolved or foftned by being 
<c infufed 20 days in oyflerfhell lime-water, but 
“ yielded fomewhat to a folution of Spanifh foap 
u in common water. 
“ From this experiment one may conclude, that 
<l it is better to prelcribe both foap and lime-water 
<c died of the palfy feven years ago, after having been fubjedt to 
<c that diftemper for feveral years : That the cure was performed 
“ in his father’s houfe at Coldinghame, on the 4th, 5th, 6th, 
“ and nth of days of April 1757. a circumftance he had noted 
tc down : That as to the date of his paper, prefented to the Royal 
c ‘ Society, he only recolledts it was written fome day in the be- 
“ ginning of November laftj but as the woman ftill continued 
“ well, he hoped the precife day of the month was no material 
“ omiffion.” This letter to Dr. Whytt is dated, Coldinghame, 
January 9th, 1758. 
* See above, p. 209, & feqq. 
V o l. 50. D d d 
<c 
for 
