CHEMISTRY 



IN ITS APPLICATIONS 





AGMOULTURE AND PHYSIOLOGY. 



BY 



JUSTUS IIEBIG, M.D., Ph.D., F.R.S., M.R.I.A., 



PROFESSOR OF CHEMISTRY IN THE UNIVERSITY OF GIES3EN, ETC., ETC 



EDITED FROM THE MANUSCRIPT OF THE AUTHOR, 



BY LYON PLAYFAIR, Ph.D., F.G.S., 



HONORARY MEMBER OF AND CONSULTING CHEMIST TO THE ROYAL AGRICULTURAL 

 SOCIETY OF ENGLAND, 



AND WILLIAM GREGORY, M.D., F.R.S.E., 



PROFESSOR OF CHEMISTRY IN THE UNIVERSITY OF EDINBURGH. 



• • » • 



FROM THE FOURT.H LONDON EDITION, 



REVISED AND ENLARGED. 



NEW YORK: 

 JOHN WILEY, 167 BROADWAY. 



1852. 



