14 A Catalogue , <kc. 
To enumerate all the various articles that are 
ufed in making experiments, or for other purpo- 
fes, would alone fill a volume. I have therefore 
fele< 5 ted the principal inftruments in ufe, to moft 
of which I have affixed prices and numbers, for 
the eafe of thofe gentlemen and ladies at any difi 
tance from London, who may .hav^occafion to 
write for any of the above inftruments, 
* To their humble fervant, 
GEORGE ADAMS, - 
At No. 60. in Fleet-Street, London, 
