A MUCH-IMPROVED AND CHEAP EDITION, 



CONTAINING 



A XTE'W CHAPTER OU SOZXiS, &.C. 



CHEMISTRY 



IN ITS 



APPLICATIONS TO AGRICULTURE AND PHYSIOLOGY. 



BY JUSTUS LIEBIG, M.D., Ph.D., F.R.S., 



PKOFESSOB OF CHKMISTBT IN THE UNIVERSITY OF GIESSEN. 



EDITED, FROM THE MANUSCRIPT OF THE AUTHOR, 



BY LYON PLAYFAIR. Ph.D. 



SECOND EDITION, WITH VERY NUMEROUS ADDITIONS. 



Price 9s. 6d. 



Quarterly Review, March, 184'2. 



" Our readers, we trust, are by this time convinced that the principles of ra- 

 tional agriculture are within the domain of science, and that from science alone, 

 when called in to aid the zealous agriculturist, can we hope for real and permanent 

 improvement. In the present work Dr. Liebig has pointed out the path to be 

 pursued, and has amply vindicated the claim of science to be considered the best 

 guide, by correcting the erroneous views hitherto prevailing of the sources whence 

 plants derive their nourishment, by developing the true causes of fertility in soils, 

 and finally by establishing on a firm basis the true doctrine of manures." 



From the Report of the Royal Agricultural Society of England, December \2th, 1840. 



" The Council observe with much satisfaction, tliat already men of the first 

 scientific character have turned the power of their minds to the investigation of 

 these interesting but recondite laws of nature, and the celebrated Professor Liebig, 

 of Giessen, has given to the world an important contribution to the theory of Agri- 

 culture." 



EIGHT POLIO PLATES 



REPRESENTING THE 



CHEMICAL LABORATORY 



OF 



THE UNIVERSITY OF GIESSEN. 



Accompanied by a Pamphlet (in German) descriptive of the same. 

 By Dr. JUSTUS LIEBIG. 



ELEMENTS OF CHEMICAL ANALYSIS, 



ZZ9'021CA.2TZC AITS OZtGAUZC. 



By EDWARD ANDREW PARNELL, Chemical Assistant, University 



College, London. 



8vo. Illustrated by Wood- cuts. (To be ready in July.) 

 TAYLOR AND WALTON, UPPER GOWER STREET. 



