LETTER OF TRANSMITTAL 



UNITED STATES DEPARTMENT OF AGRICULTURE, 



FOREST SERVICE, 

 Washington, D. C., December 13, 1911. 



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

 " Experiments with Jack Pine and Hemlock for Mechanical Pulp," 

 by J. H. Thickens, chemical engineer in forest products, and to 

 recommend its publication. 



Respectfully, HENRY S. GRAVES, 



Forester. 

 Hon. JAMES WILSON, 



Secretary of Agriculture. 

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