LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Office of Experiment Stations, 

 Washington, D. C, August 15, 190J^. 



Sir: I have tlie honor to transmit herewith a report of studies of 

 the food of Maine Inmbermen, carried on by Charles D. Woods, 

 director, and E. R. Mansfield, assistant chemist, of the Maine Agri- 

 cultural Experiment Station, and recommend that it be published as 

 Bulletin No. 149 of this Office. 



Five dietary studies and six digestion experiments were carried on 

 in Maine lumber camps while the men were engaged in severe manual 

 labor. The dietarj^ studies are interesting in themselves and of use 

 in the calculation of dietary standards. The digestion experiments 

 afford data regarding the digestibility of a mixed diet and the effect 

 of severe work upon the quantities of nutrients assimilated. 



Acknowledgment should be made to Mr. Thomas Gilbert, of Orono, 



Me., for the opportunity to carry on the investigations in his lumber 



camps and for other courtesies. 



Respectfullv, 



A. C. True, 



Director. 

 Hon. James Wilson, 



Secretary of Agriculture. 



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