154 STORRS AGRICULTURAL EXPERIMENT STATION. 
InvTables 71). 92.73.0756 e707 7a. 73, 
Column 1 gives the number of the test. 
Column 2 gives the number of cows in the herd. 
Column 3 gives the pounds of digestible protein in the ration. 
Column 4 gives the calories in the ration. 
Column 5 gives the pounds of grain in the ration. 
Column 6 gives the pounds of dry roughage in the ration. 
Column 7 gives the pounds of silage in the ration. 
Column 8 gives the average milk yield in pounds. 
Column 9 gives the average butter yield in pounds. 
Column 10 gives the average cost of the ration. 
Column 11 gives the estimated manurial value of the ration. 
} 
Prices of feed, Table 70.—The prices assumed in estimating 
the cost of the ration are uniform for the entire period, and are 
such as prevailed in the markets of Connecticut for the winter 
of 1903-04. ‘The Connecticut State Station, in its inspection 
work of feeding stuffs,* obtained the retail price per ton for 
various feeds. Prices were obtained from forty-eight towns and 
villages, and so far as applicable they have been used in this 
calculation. The cost of cotton seed meal is the average of 
prices from twenty-five dealers, bran of sixteen dealers, hominy 
meal of twenty-four dealers, etc. | 
Bog hay and black grass were valued at $8 per ton; poor or 
medium hay, Hungarian hay, oat and pea hay at $12 per ton; 
clover and rowen at $14, and mixed hay at $16 perton. All 
hay was assumed to be ‘‘ mixed’’ unless otherwise designated. 
Column 3 of Table 70 shows an estimated manurial value in 
one ton of the feeding stuffs. In this calculation nitrogen was 
rated at 15 cents per pound, phosphoric acid at 5 cents, and 
potash at 4% cents,f and it is assumed that one-half of the 
fertilizing elements in the food will be obtained in the manure. { 

* Bulletin No. 145. 
} The values of the several ingredients vary from year to year with the cost of fertil- 
izers. The ratings for phosphoric acid and potash are full high for present market 
prices of commercial fertilizers. 
{It is a common custom to assume that two-thirds of the fertilizing ingredients of 
the feed will appear and be available in the manure. It is questionable, however, as 
manure is handled on the average farm, if two-thirds or even one-half of the fertiliz- 
ing ingredients are ordinarily saved. 


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