AMERICAN EDITION 



OF THE 



BRITISH ENCYCLOPEDIA, 



OR 



DICTIONARY 



OF 



ARTS AND SCIENCES, 



COMPRISING 



AN ACCURATE AND POPULAR VIEW 







OF THE PRESENT 



IMPROVED STATE OF HUMAN KNOWLEDGE, 



BY WILLIAM NICHOLSON, 



Author and Proprietor of the Philosophical Journal, and various other Chemical, Philosophical, and 

 Mathematical Works. 



ILLUSTRATED WITH 



UPWARDS OF 180 ELEGANT ENGRAVINGS. 

 VOL. VI. 



PHILADELPHIA ! 



PUBLISHED BY MITCHELL, AMES, AND WHITE, 



ALSO, 



BY INGRAM AND LLOYD, NASHVILLE; 



William Brown, Printer. 





