31 



Trueman* allows $io for the value of the manure and $5 for each 

 calf. Deducting the $15 we have $50 net for fixed charges. 



Professor Minkler of the New Jersey Station f states that the fol- 

 lowing charges represent the cost of keeping a cow for a year (not 

 including feed), based on the actual cost of labor. He does not in- 

 clude supervision : 



Labor (one man for 12 cows) at $1.50 per day, $43.00 



Bedding (one bale shavings for 20 cows per day), 5.29 



Stabling, ........ 5.00 



Interest, 5 per cent on 5 100 (value of one cow), 5.00 



Depreciation in value of cow, 10 per cent per cow, 10.00 

 Bull ($200 at 5 per cent, $10 ; cost of keep $50) 



per cow, ....... 1.93 



Average per cow per year, . . . $70.22 



Average per cow per day, . . . .192 



He states that in the above " no charge is made for the investment 

 in the farm itself or the dairy buildings, and includes neither dairy 

 apparatus, milk utensils, incidental expenses nor insurance." The 

 value of the manure and calf is not deducted from the above. 



* Bulletin 73, Storrs (Conn.) Experiment Station, p. 130. 

 t Thirty-first report of the New Jersey Station, 1909, p. 65. 



