Enological Studies, No. 4. Issued November 20, 1911 , 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY BULLETIN No. 145. 



H. W. WILEY, Chief of Bureau. 



ENOLOGICAL STUDIES 



THE CHEMICAL COMPOSITION OF 

 AMERICAN GRAPES GROWN IN 

 OHIO, NEW YORK, AND VIRGINIA. 



BY 



WILLIAM B. ALWOOD, 



Enological Chemist. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1911. 



