THIS bulletin presents the results of the first of a series 
of investigations which have been planned by the 
Committee on Farm Power, appointed by the Secretary of 
Agriculture to represent the Bureau of Public Roads, the 
Office of Farm Management and Farm Economics, and the 
Bureau of Animal Industry in a cooperative study of all 
phases of the farm power problem. This committee has 
been charged with carrying out, for the Department of 
Agriculture, the plan of research in this field outlined by the 
Farm Power Conference, at Chicago, on October 6 and 7, 
1919. 
The committee recognizes the great importance of this 
field of work and the inadequacy of the present investigation. 
It is hoped that through more adequate appropriations and 
more general cooperation with the State agricultural experi- 
ment stations, the work may be broadened to make possible 
a comprehensive study of the problems now calling for 
solution in the development of farm power, in order that 
farmers, horse .breeders, and manufacturers may have at 
hand such facts as will guide them toward the greatest 
ultimate success. 
H. C. TAYLOR, 
Chief, Office of Farm Management 
and Farm Economics, 
G. M. ROMMEL, 
Chief, Animal Husbandry Division f 
Bureau of Animal Industry, 
S. H. McCRORY, 
Chief, Agricultural Engineering, 
Bureau of Public Roads, 
Department Committee on Farm Power, 
