THE CROPPING SYSTEM 141 



The accompanying charts represent the horse 

 and man labor required on two farms. Chart 

 A shows the amount and the distribution of man 

 labor in the production of potatoes and beans 

 in the climate of New York. Chart B shows 

 the horse power required and the periods in 

 which greatest demand is made upon this same 

 farm in the production of potatoes and beans. 

 Chart C represents the man labor required on 

 a farm in which the rotation consists of corn, 

 oats, wheat, and flax. This represents the ac- 

 tual hours of labor and shows the highpoints 

 in the system. Chart D, when compared with 

 C, indicates the relation between man and horse 

 labor on such a farm and points out the periods 

 when horse power is in greatest demand. 



These charts clearly bring out the fact that 

 the maximum horse and man labor required 

 upon each of these farms is greatly in excess of 

 the average requirement for the crop. To illus- 

 trate: During the periods of harvesting pota- 

 toes and beans there is a great excess of both 

 man and horse labor required over any other 

 period during the growing season. This period 

 of stress in the potato and bean fields is luckily 

 not a period of stress with corn, oats, wheat, or 

 flax, so that if the demands for man and horse 

 labor during planting season for corn, oats, 



