T O 
HERMAN BOERHAAVE, 
A. L. M. Philos, and M. D, 
PROFESSOR of PHYSICK 
IN THE 
University of LETT) EH, 
President of the College of ChirurGions 
in that City. 
Fellow of the Royal Soci'ety 
of LONDON, 
AND 
M]ember of the Royal Academy of 
Sciences at FA R IS, &c. 
Honoured S I R, 
A N Addrefs to You in Englijh needs no 
JlX. Apology, fince it is well known to 
all, who have the Happinefs of an intimate 
Acquaintance with You, that not only the 
