LETTER OF TKANSMITTAL. 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY, 

 Washington, D. <7., August 15, 1912. 



SIR : I have the honor to transmit herewith a manuscript entitled 

 ' The Production of Maple Sirup and Sugar," by A. 'Hugh Bryan, 

 chief of the sugar laboratory, Bureau of Chemistry, and William F. 

 Hubbard, of the Forest Service, and to recommend its publication as 

 a Farmers' Bulletin. The part by Mr. Bryan is the result of ex- 

 tensive chemical study of pure maple sirup and maple sugar, which 

 included inspections of all the sugar maple districts of the United 

 States. Mr. Hubbard's contribution includes the descriptions of the 

 A^arious sugar maples and the forester's recommendations for the 

 management and care of sugar maple groves. 



The manuscript as a whole contains the essential parts of Forest 

 Service Bulletin 59 and Farmers' Bulletin 252, which, through the 

 cooperation of the Forest Service", it is designed to supersede. 

 Eespect fully, 



K. E. DOOLITTLE, 



Acting Chief. 

 Hon. JAMES WILSON, 



Secretary of Agriculture. 

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