ANNALS OF PHILOSOPHY; 



OR, MAGAZINE OF 



CHEMISTRY, MINERALOGY, MECHANICS, 



NATURAL HISTORY, 

 AGRICULTURE, AND THE ARTS. 



BY THOMAS THOMSON, M.D. RR.S. L. & E. F.L.S. 



REGIUS PROFESSOR OF CHEMISTRY IN THE UNIVERSITY OF GLASGOW, 



ItlEMBER OP THE GEOLOGICAL SOCIETY, OF THE WERNERIAN SOCIETY, AND OP THE 



IMPERIAL MEOICO-CHIRURGICAL ACADEMY OF PETERSBURGH. 



VOL. XVI. 



JULY TO DECEMBER, 1820. 



floittiou : 



Printed by C. Baldwin, New Bridge-street; 



FOR BALDWIN, CRADOCK, AND JOY, 



47, PATERNOSTEII-IIOH'. 



1820. 



