142 



PROFITABLE DAIRYING 



than the above maintenance ration before he 

 can expect her to yield a satisfactory return. 

 It would be a foolish engineer that would only 

 turn on steam sufficient to keeiJ his engine mov- 



Fig-. 40. Maplecrest Pontiac Flora Hartog. 

 The photograph shows how she appeared at the close of her 

 great year's work — 25,106.3 pounds milk; 3.92 per cent fat. 



ing when it is in his power to give it all the 

 steam necessary to work it to its full capacity. 

 The engineer, therefore, must take into consider- 

 ation the size of the engine, the particular type 

 of engine, and the work to be performed. So, 

 too, must the dairyman take into consideration 

 the size of the cow, her individuality, and also the 

 particular type of cow. A three-year-old heifer 

 cannot be expected to be as productive as a cow 

 several years older. A good type of cow will do 



