Colorado Fodders. 
95 
? tion, 45.72, 25.44 and 48.72, respectively. In the saltbush we have 
to add the aqueous extract to the above. The alcoholic extract re- 
' moved no furfurol or equivalent pentosan, but both glucose and 
' sucrose were present and the extract was abundant, 3,197 grams of 
> it having been consumed. The next salient feature in this connec- 
\ tion is the low coefficient of digestion found for the furfurol, i. e., 
,■ 37.37; the pentosans extracted by the i per cent, solution of hydric 
J chlorid are indigestible in this case, whereas it is highly digestible in 
the alfalfa and corn fodder and has a coefficient of 44.04 in the 
I native hay. The coeffcient of digestion for the furfurol in the 
cellulose of the alfalfa and native hay is 72.6 and 74.9, respectively, 
. and is very low in that of the corn fodder, 32.57. There is no 
j| means of judging how much pith cellulose is represented in this 
corn fodder, and I know nothing about the deportment of this vari¬ 
ety of cellulose. It is quite possible that this may have a noitceable 
influence on this result. In* the three fodders which we And to be 
inferior or poor, timothy, sorghum and saltbush, we have low co- 
« efficients for the furfurol, the general coefficients being 36.24, 46.46 
J and 37.37, respectively, and for the furfurol in the cellulose 50.12, 
^ 48.72 and 26.49, respectively. 
r §227. I will again call attention to the fact that the cellulose 
; obtained as the result of these treatments has, as a rule, a fairly 
5 .high coefficient of digestion in those fodders which proved to be the 
best ones, in alfalfa 52.8, in corn fodder 54.0, in native hay 50.6, but 
lower in the other three, timothy, sorghum and saltbush, 41.6, 47.4 
and 29, respectively. The digestible proteids in these fodders were 
in the alfalfa 1,325.09 grams, in the native hay 366.55 grams, and 
in the corn fodder 178.46 grams; these are the three fodders which 
caused the sheep to gain, the other three, timothy, sorghum and 
saltbush, caused them to lose. The following amounts of proteids 
were digested while the sheep were on these fodders, with the 
timothy 234.42 grams, with the sorghum 300.91 grams, and 
with the saltbush 1,089.80 grams, so that the loss is scarcely to be 
attributed to a lack of digestible proteids. The sheep digested al¬ 
most as many grams of proteids with the sorghum as with the na¬ 
tive hay and almost times as much as they digested in the form 
of corn fodder. They digested six times as much in the form of 
saltbush as in that of corn fodder, and while the one lot gained 3j/d 
pounds on the corn fodder, the other lot lost 8^ pounds on the 
saltbush. My interpretation is that the differences in the results 
point to the absence of a sufficient amount of easily digestible carbo¬ 
hydrates in the timothy hay, sorghum and saltbush. 
§228. I have in mind a little more deffnite idea when I use 
• the term easily digestible than we sometimes have when we use this 
term. I do not simply mean that large quantities of the carbohy- 
