HAND AND MACHINE LABOR. 



147 



was 350 pounds of lint cotton per acre. What was the 

 cost of labor per pound of lint cotton in 1855 ? In 1906 ? 



499. In 1855 the cost per acre of sugar cane was, for 

 human labor $37.94, and for animal labor $2.38 ; in 1906 

 the cost per acre was, for human labor $11.32, and for 

 animal labor $5.05. The production in both cases was 

 10 tons per acre. What was the cost of labor per ton 

 in 1855? In 1906? 



THRESHING THE WHEAT. 

 A familiar scene on all grain farms. 



Cost and labor requirement of some crops. The 



table below may be used for further comparisons to show 

 the decrease in the cost of producing crops and in the 

 human effort required, during the last 40 or 50 years. 



