732 



ANNUAL REPORT OF NEW-YORK 



Efficacy of sugar aJid starch in the production of fat. — I now call 

 attention to a subject which has been long a matter of contro- 

 versy amongst the teachers of agricultural chemistry, and which 

 may be considered as barely settled — the efficacy of sugar and 

 starch in the production of fat. In the Highland Agricultural 

 Society's Journal, I find well authenticated and reliable state- 

 ments by Mr. Hope, of Fenton Barns, and others, to the effect 

 that cattle supplied with turnips — 170 lbs. to 180 lbs. per day, 

 with 5 lbs. of straw per day — had gained throughout a course of 

 feeding 14 lbs. j^er week — a gain I have scarcely found exceeded, 

 taking the average of a lot for a lengthened course. From vari- 

 ous analyses of these materials, and selecting those of good ave- 

 rage quality, I deduce the following proportions in lbs. for 24 

 weeks : 



Iba. 



I assume* the oil or fat of 120 lbs. of turnips per day, 

 (or for 24 weeks, 44.34 lbs.) to be required for main- 

 tenance, and compute it as equal to starch, in propor- 

 tion of 2 lbs. of oil to 5 lbs of starch and sugar, or 

 44.34 lbs „... ==110.88 



Starch and sugar in 120 lbs. of turnips per day for 24 



weeks, '. _ 1330.12 



1441. 



* Vide Lehmann, Cavendish Society's Ed., vol. iii. 



