PHILOSOPHICAL 
TRANSACTIONS: 
Giving fome 
ACCOUNT 
O F T H E 
Prefent Vndertafyngs^Smdies&cidL Labours 
OF THE 
INGENIOUS, 
In many 
Confiderable Parts of the Wo r l e>. 
VOL. XVIII. For the Year 1^4. 
L 0 If D 0 If: 
Printed for S. Smith and B. ffolford, Printers to the Royal 
Socitty, at the Pr^/s ^rw* to St. P*«fs Church-yard. 169?. 
