PHILOSOPHICAL 



GIVING SOME 



OF THE 



Prefent Undertakings, Studies, and Labours, 



o F T H E 



IOUS 



IN MANY 



Confiderable Parts of the W O R L D. 



VOL. LXII. 



LONDON: 



Printed for LOCKYER DAVIS, in Holbourn, 

 Printer to the Royal Society. 



M.DCC.LXXII. 



A 



