740 



ANNUAL REPORT OF NEW-YORK 



These numbers seem to denote tlie comparative labor or exercise 

 of the organs of respiration requisite for the consumption of these 

 elements of food respectively, or, in other words, for the supjport 

 of vitality. Their relative composition is — 



Hydrogen. 

 . 11.74 _. 

 . 6.17 .. 

 . 6.66 ._ 



Oxygen. 

 . 10.13^ 



. 49.38 \ per cent. 

 _ -53.34 J 



Carbon. 



Fat, _ 78.13 _. 



J Starch, ... 44.45 .. 

 Sugar, 40. 



Whilst these analyses have been in the course of preparation, 

 with the view of being inserted in the Society's Journal, another 

 month has elapsed, during which I have proceeded with my ob- 

 servations on dairy produce. On the 12th of March I purchased 

 Mr. Smith's cow (see p. 712) for 12/. 10^., being more than her 

 market value, for the purpose of trying her on my food; her yield 

 of milk had then diminished to 8 quarts per day. On the 31st 

 of March, four weeks from the former weighing, and nineteen 

 days after being treated with my food, her yield of milk had in- 

 creased to 9 J quarts per day, and her weight to 8 cwt. 1 qr., being 

 28 lbs. increase. 



Mr. Pawson^s cow, which was continued on the same food, viz., 

 meadow-hay ad libit umj and a more limited supply of turnips, 

 reduced her yield of milk to less than 5 quarts per day, without 

 alteration in her weight. 



My cow first placed on trial with those of Mr. Smith and Mr. 

 Pawson, gave a yield of milk of 12 quarts per day, and gained 

 28 lbs. in the four weeks, her weight on the 31st of March being 

 10 cwt. 2 qrs. 



The weight and the yield of milk of the six, on the 31st of 

 March, were^— 



Weight of No 1, 

 2, 

 4, 

 6, 

 7, 

 11, 



March 31. 



cwt qrs lbs 



10 

 11 

 10 

 11 

 11 

 10 



3 



3 

 1 

 2 

 3 

 1 









 

 

 

 



Yield of 



milk 

 per day. 



quarts. 

 8.9 

 14.9 

 13 

 12 

 10 

 12 



Gain in 

 4 weeks. 



lbs. 

 58 

 56 

 28 



S4 

 84 

 84 



