LETTER OF TRANSMITTAL. 
U. S. DEPARTMENT OF AGRICULTURE, 
Drviston OF SOILS, 
Washington, D. C., September 28, 1900. 
Str: I have the honor to transmit herewith a manuscript on a new 
enzym occurring in the tobacco plant, and probably having much to 
do with the fermentation and, possibly, with the development of flavor 
and aroma in tobacco. It represents work done in cooperation with 
the Division of Vegetable Physiology and Pathology of this Depart- 
ment. 
Respectfully, 
Mitton WHITNEY, 
Chief of Division. 
Hon. JAMES WILSON, 
Secretary of Agriculture. 
