LETTER OF TRANSMITTAL 
U. S. Department of Agriculture, 
Office of Experiment Stations, 
Washington, D. C, March 15, 1905. 
Sir: I have the honor to transmit herewith for publication Bulletin 
No. 153 of this Office, containing the proceedings of the Eighteenth 
Annual Convention of the Association of American Agricultural 
Colleges and Experiment Stations, held at Des Moines, Iowa, Novem- 
ber 1-3, 1904. 
Respectfully, A. C. True, 
Director. 
Hon. James Wilson, 
Secretary of Agriculture. 
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