Machinery and Production 



21 



duction of which machinery has become a recognized 

 factor. The crops selected for this purpose, together 

 with the time of man-labor requisite for produciug 

 stated quantities of each crop by hand and by machine 

 methods, as reported by the Department of Labor, are 

 shown in the following table : 



These several crops for the years covered by the data 

 concerning production by the aid of machine power, 

 were as follows : 2 



unit numbers" here given are the unit numbers made use 

 of in the Thirteenth Annual Report of the Department of Labor, 

 from which the data in the table are taken. The numbers are 

 repeated here only for purposes of reference. 

 'Department of Agriculture, Year Book for 1900. 



