U. S. DEPARTMENT OF AGRICULTURE 
OFFICE OF EXPERIMENT STATIONS-BULLETIN NO. 153. 
A. C. TRUE, D 
PROCEEDINGS 
EIGHTEENTH ANNUAL CONVENTION 
ASSOCIATION OF AMERICAN AGRICULTURAL COLLEGES AND 
DES MOINES. IOWA. NOVEMBER 1-3, 1904, 
EDITED BY 
A. C. TRUE and W. H. BEAL, for the Office of Experiment Stations, 
AND 
H. C. WHITE, for the Executive Committee of the Association. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
19 5. 
