New York AGricuntturaL EXPERIMENT STATION. 269 
feeding-stuffs differ, for if we treat grain with diastase we convert 
nearly as much of the starchy matters into sugar as when they are 
treated with acid, but an attempt to apply this method to hays 
fails, although acid will invert about 20 per cent in timothy. 
We may by similar treatment show differences in many of those 
starchy products in the different foods, and I believe there. exists 
a variation and gradation in the starches, as they occur in plants, 
no less marked than in the case with the nitrogenous products 
which we have already been able to separate into true albuminoids, 
amides, amide acids, etc. These various gradations of starch 
may be found to have different feeding values, and thus enable us 
to explain certain differences, even though these variations be 
slight. 
THE Farts. — 
The oils of different plants and parts of plants are possessed of 
quite different properties, chemical and otherwise, and although 
considered of like value for \feeding, yet their effect is well known 
to be quite differént. Pure American lard is said to be quite 
different from that produced in England, and hogs fattened on 
masts furnish a soft oily lard quite different from corn fed hogs, 
showing the influence of the food on the animal products; and 
again, as reported elsewhere, cows fed on linseed meal gave a 
milk from which the butter was found to possess properties very 
different from the butter of the same cows when fed corn or wheat 
bran as their grain feed. In Holland this influence of the food on 
the butter is carefully noted, and itis said that the difference 
between butter made under feed of palm nut cake and linseed 
meal is very marked, in the one case, being firm, hard and waxy, 
VARIATION IN OILS OF FEEDING-STUFF. 






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O/T ELAN TOD Hh teins cap Rate acy ol GPE Pac MARYSE A NSO TON ARETE SATE RS WS. 102.6 209.7 
GOTLOM SOO OL Lasse reklama feo meals a a siete Sidcl dl ohME CU Mais eMC mete cae ous 89.7 200.4 
GOLLOMSOOMIO ete acre Oe cee ate eons Hees aitre ae aie eet lalate tte tne oeg ai 114.7 “199.9 
WHT GS TDL IEE OLIN aan tee amine at ene hs the MSL nila ak aM ad, Sle diallatctend ave 136.0 178.0 
Seer aaah, Kies de ead es hatceieelle apa chi aac rv es whe wise vanes R 106.6 181.1 
ITA TIVOEE Va IL QVEOR renee corse ois oialo'e ra tg aia claie ace chaigravtietaee eetaune wlan c recat es 102.1 133.9 

