FARM LABOR 



351 



unit, so we must reduce the labor to a comparable unit 

 when we desire to compare the efficiency with which 

 different farms are organized. The animal unit is a cow 

 or horse. The best feed unit is a pound of corn. A work 

 unit is the time required to raise an acre of hay, cut once. 

 When all these are reduced to units we may say that 

 a farm is as heavily stocked as if it had a certain number 

 of cows. It uses feed equivalent to a certain number of 

 pounds of corn, has work equal to a certain number of 



TABLE 72. PRODUCTIVE WORK UNITS 



work units, and has a certain number of units of horse labor. 



The labor involved in raisins; a crop is very much more 



than the time ordinarily counted when one estimates how 



