368 H. P. Armsby—Digestion Experiments. 
thus appears that the digestion coéfficients for the bye- 
fodders are subject to a considerable analytical error, which, 
when expressed as above, of course varies in amount with the 
proportion of the ingredients-in question which the bye-fodder 
contains. Thus the absolute probable error of the amount of 
crude fiber digested is very nearly the same in the malt sprouts 
as in the cotton-seed meal, but the very small percentage of 
fiber contained in the latter substance renders the percentage 
_ There is, however, another and more serious source of error 
in the determination of the digestibility of bye-fodders. G. 
while Sheep No. 1 shows no such difference except as regards 
the protein and perhaps the fat. The variations of the single 
Dry matter .- 1°3 per cent. 
Protein a7 
CU COE i oeka ak eceny veces et ee 
There is no obvious reason why the digestibility of the hay 
may not have varied from the mean assumed for it1 
periments with bye-fodders. We have no measure 
probable amount of that variation, but it is reasonable 
assume a possible variation at least as great as that observed es 
the hay alone. Then in the calculations on p. 363 the values 
of the amounts digested from the hay will be subject to a pos! 
ble error from this cause of 
Cc. 8..M. 
Greecenute: experiments. 
Dry matter +6°50 grms. + 7°64 grms. 
rotei +182“ 4213 
Crude fiber 4179 4+2°11 
. * . . | e 
Combining these with the probable analytical errors, pre 
the following for the possible errors. (We omit the calcula 
for the sake of brevity.) 
Possible Errors. 
Malt sprouts. Cotton-seed meal. 
+ + 
ig Armeayeatiie aaate 6°54 grms.= 425 per cent, 7-67 grms.= 474 per ome 
by SCT 209 “ = 566 « 44 ee TE 
Crude fiber... . 229 “ =j]99) « 9-62  =52°37 
* Landw. Versuchs-Stationen, xxix, 1. 
