EXPERIMENT STATION. 103 



" From this analysis the Broad Rock Farm sample is seen to be 

 nearly 40 per cent, better than the best of seventeen* other 

 samples analyzed. It is nearly equal to good grass, and has an 

 apparent nutritive value of about 2J lbs. of ensilage to 1 of good 



hay. 



" The cost of 2| tons ensilage = $7.50. A fair estimate for 1 

 ton of hay = $12." 



"Cost op Ensilage at Broad Rock Farm. September, 1881. 



Ploughing 9 acres, 9 days, 1 man and pair of oxen at $2.50 per day, $ 22.50 



Seed (part at $4 per bushel, which is useless expense), — 9.50 



Manure, including f of value and hauling and spreading, 135.00 



Planting, 5 days, 2 men and 1 horse at $3.50, 17.50 



Cultivating, 4 days, 1 man and 1 horse, 9.00 



Cutting, 13 men and 2 teams for 6 days, 120.00 



Coal for steam engine, — 14.00 



$327.50 

 Add for repairs on machinery, salt and extras, 32.50 



$360.00 



"The quantity of ensilage was 120 tons; cost, excluding the 

 interest on land and on silos, $3 per ton. 



" The cost per ton on hay for interest aiKl storage is of course 

 much larger than for ensilage." 



■" Experiment in feeding Ensilage at Broad Rock Farm. Experiment began 

 Feb. 16, 1882, with tenvaverage cows. The Ensilage had been stored 

 fully five months. 



" Taste of ensilage decidedly sour, and subsequent analysis as 

 above showed yo^ ^^ ^ P®^' cent, acetic acid. This is equal to 

 about a quart of strong vinegar per 100 pounds. From Feb. 16 

 fed the ten cows thus, per day : Ensilage at two feeds, 1 7 lbs. 

 each feed = 34 lbs. per cow. Hay at one feed, 7 lbs. each feed = 

 7 lbs. per cow. Meal 2 quarts and bran 4 quarts per cow per 

 day. Fed for 7 days, yield of milk was 68 quarts per day. Then 

 changed the feed of the same cows and gave them no ensilage, 

 but instead gave 14 lbs. of hay, making total hay 21 lbs. per day 

 per cow, with meal and bran same as before, and fed for 7 days. 

 Yield of milk was 59 quarts per day. Then changed back to feed 

 same as in the first 7 days, and fed for 7 days. Yield of milk 

 was 66 quarts per day. 



* lu Mr. Hazard's original memorandum eleven other samples were compared. 



