PRODUCING MARKET MILK IN NORTHWESTERN INDIANA. 31 



hours; horse labor, 16.2 hours; overhead and other costs, $27.11. 

 Credits other than milk: Manure, 6.8 tons; calves, 0.87. 



Interest, depreciation, and similar items on buildings amounted to 

 11.4 per cent of their inventory value. Corresponding charges 

 against equipment were 27.7 per cent of the equipment inventory, 

 and the herd charges were 8.6 per cent of the herd inventory. The 

 total charges against buildings, equipment, and livestock amounted 

 to 11.4 per cent of their combined inventory value (see Table 17). 



Men performed 84.7 per cent of the work about the dairy in winter, 

 but in summer only 80.7 per cent of it. The rest of the labor was 

 performed by women or boys and girls. 



The net cost of producing 100 pounds of milk was 1.8 per cent 

 higher from November to April, inclusive, than during the period of 

 May to October, inclusive, and the total cost varied only slightly 

 from month to month during any one season. A little more labor 

 was required to produce 100 pounds of milk in the winters than in 

 the summers. 



There was no close correlation between the monthly cost of milk 

 and the monthly price received for it during the two years. 



The proportion of cows which freshened each season was uniform, 

 and the calf crop was divided equally between the winter and the 

 summer periods. 



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