o/T 
\ b 
Ll (t 5 
Bulletin 168. 
November, 1910 
The Agricultural Experiment Station 
OF THE 
Colorado Agricultural College 
The Deterioration of Manures Under 
Semi-Arid Conditions 
BY 
W. P. HEADDEN 
AND 
EARL DOUGLASS 
PUBLISHED BY THE EXPERIMENT STATION 
FORT COLLINS, COLORADO 
1910 
