E S S^\ Y S 



\-^. A .N D 



OBSERVATIONS, 

 PHYSICAL AND LITERARY. 



Read before thefPhilofophical S O C fE T T in Edin- 

 BURGH, and publiihed by them. 



V O L U M E I. 

 SECOND EDITION. 



EDINBURGH: 



Printed for JOHN BALFOUR. 



]Nil,DCC,LXXI. 



