PREFACE. 



This bulletin gives the results of recent investigations undertaken 

 by Mr. George C. Husmann, Expert in Charge of Viticultural Inves- 

 tigations, of this office. The manufacture and preservation of unfer- 

 mented grape must is a subject that is attracting much attention at 

 present and is of vital interest to both manufacturers and consumers. 



Mr. Husmann has made a careful investigation of the industry in 

 both its economical and commercial aspects, and the bulletin is designed 

 to aid both manufacturer and consumer in preparing and utilizing a 

 product of the grape that is of most important economic value. 



Gr. B. Brackett, 



Pomologist. 

 Office of the Pomologist, 



Washington, D. C. , June 24-, 1902. 



