Hl, P. Armsby—Digestion Feperiments. 367 
Dry matter . +0°08 per cent. 
Protein _..._. aap ae Le ee ca 
Pe RReP ie fo Oe ete yeloD ie. oe +062 * 
That is, the percentages for digestibility as given on p. 360 
are subject to these errors. 
eriments with bye-fodders.—In these experiments we have 
the additional errors arising in the weighing out and analysis 
of the bye-fodder. 
4. Errors in weighing. The bye-fodders were weighed on 
the same balance as the hay, but were weighed directly, and 
are consequently subject to an error of only + 0:1 gram for 
Asingle weighing. Both bye-fodders and hay were weighed 
out for ten days at a time instead of for six as in Periods I and 
iP lainly, then, the error due to weighing will be less than 
in those periods and may be neglected. 
b. Analytical errors. © The analytical errors we may calculate 
upon the same basis as before, remembering, however, that the 
Composition of the hay in these experiments is the average of 
“ight determinations, except the dry matter, which is the 
* Saag of but two (compare p. 358), while that of the bye-fod- 
&r 1s the average of only two. 
€ errors in the determination of the excretion would be 
Practically the same in amount as before. 
PROBABLE ERRORS. 
Malt Sprouts. 
Dry matter. Protein (Nx6°25). Crude fiber. 
Grms. 5 rms, 
“xe vee oe §00+0°51L 674+0°44 163 +0°57 
Sprouts fed_____ 15440715 374027 214+0°35 
Smet fed) 08 on 654+ 104-4 1844 
peated 22) oe _ 295 40-22 42+0°51 101+0°66 
a 35940°97 62+ 83+ 
Digested from hay... 256 40-40 33-40-76 7641-08 
peested from M.S... 1030-70 29 41°05 T4143 
Teentage error ____ +0°45 pr. ct. + 2°84 pr. ct. +6°82 pr. ct. 
Cotton-seed Meal, 
ay OB ii ss _ B89+40°59 - 79 +0°52 19240°68 
mM. fed... ... 1624-016 7740°29 5+0°37 
nt coin ee 1614 1564 197 4 
“yee ae ee 314 40°22 49 +0°51 109 + 0°66 
Total di 
" mested 437+ 107+ 88+ 
Digested from hay... 30140-47 39 40-90 9041-17 
Digested from C.S.M. 136+40°80 68+1°19 —241°55 
Petcentage error +0°49 pr. et. +1°55 pr. et. +31°01 pr. ct. 
