[ r 5 ] 
II. 1 *he Sequel of the Cafe of Mr . Butler, 
of Mofcow, Printed in Philofophical 
Tranfadlions, Vol. L. p. 19. Communi- 
ated by Mr. Henry Baker, F. R . S. 
Read jan. 19, JN the year 1757 I had the honour to 
I/64 ‘ X communicate to this Royal Society, 
from Dr. James Mounfey, F. R. S. late Privy-coun- 
cellor and chief Phyfician to the Emprefs of Ruffia, 
tEe very extraordinary cafe of Mr. Butler, a paper- 
ftainer at Mofcow, who, on mixing verdegris and 
falfe-gold leaf with aqua fortis, by way of ex- 
periment, for the production of colours, and ftirring 
the mixture with a fmall pair of fcifiars, was foon 
after affeCted with a burning pain, firft in one finger, 
then in his whole hand ; afterwards in the other 
hand : in his legs, toes, fhoulders, back, belly, 
forehead, eyes, and by turns in every part of his 
body, fhooting from place to place, like flafhes of 
lightning, as he termed it. He complained likewife of 
great anxiety and pain at the pit of the ftomach, as if 
a burning iron was laid on it, with many other dan- 
gerous and uncommon fymptoms, which in about ten 
days abated, and after a time feemed intirely gone : 
for the particulars whereof, and the manner in which 
he was treated by Dr. Mounfey, I muft refer to the 
account printed in the 50th Vol. of the Philofophical 
TranfaClions, p. 19. 
Thus much being necefiarily premifed, I now take 
the liberty to lay before you a letter to me from Dr. 
5 Mounfey, 
