PHILOSOPHICAL 
TRANSACTIONS, 
GIVING SOME 
ACCOUNT 
OF THE 
Prefent Undertakings, Studies, and Labours, 
o F T H E 
INGENIOUS, 
1 1ST MANY 
Confiderable Parts of the WORLD. 
V O L. LXIV. For the Year 1774. 
PART II. 
LONDON: 
Printed for LOCKYER DAVIS, in Holbourn , 
Printer to the Royal Society. 
M.DCC.LXX1V. 
