THE ANIMAL MACHINE 



thirty-three thousand pounds of weight to the height of 

 one foot in one minute. It would be hard to say just 

 why this particular standard was fixed upon, since it 

 certainly represents more than the average capacity 

 of a horse. It is, however, a standard which long 

 usage (it was first suggested by Watt, of steam-engine 

 fame) has rendered convenient, and one which the 

 machinist refers to constantly in speaking of the effi- 

 ciency of the various types of artificial machines. All 

 questions of the exact legitimacy of this particular 

 standard aside, it was highly appropriate that the labor 

 of the horse, which has made up so large a share of 

 the labor of the past, and which is still so extensively 

 utilized, should continue to be taken as the measuring 

 standard of the world's work. 



[61] 



