SCIENTIFIC AGRICULTURE, 



OR THE ELEMENTS OF 



CHEMISTRY, GEOLOGY, 



BOTANY AND METEOROLOGY, 



. ; o t 



PRACTICAL AGRICULTURE 



BY M. M. RODGERS, M. D., 

 AUTHOR OF "AGRICULTURAL CHEMISTRY," "PHYSICAL EDUCATION 



AND MEDICAL MANAGEMENT OF CHILDREN," &C. 



ILLUSTRATED BY NUMEROUS ENGRAVINGS, & A COPIOUS GLOSSARY. 



Nature maintains uniformity in the operation of all her laws, and produces nothing 

 by chance : whenever, th- refore, we observe an apparent exception to this prin- 

 ciple, it is due to deficiency of knowledge or error in conclusion. And who- 

 tver pi'actically disregards this truth, and rests his hopes upon contingent 

 events, will be compelled to correct his error at his own cost. 



ROCHESTER: 



PUBLISHED BY ERASTUS DARROW, 



CORNER OF MAIN & ST. PAUL STREETS. 



1848. 



