Colorado Fodders. 87 
ties. The alfalfa sugar, galactose, shows a coefficient of 84, and the 
saltbush sugar, xylose, a coefficient of 58.6. 
§205. The nitrogenous substances may contribute a small 
proportion of these sugars, but they undoubtedly are, for the most 
part, derived from other compounds. 
§206. The difference in the coefficients of digestion for the 
respective residues becomes still more significant when it is called to 
mind that this residue is one of the three important portions of the 
fodder, as will be more fully shown under the discussion of their 
relative heat values. We will find that the coefficients of digestion, 
53 for the residue from the alfalfa and 29 for that from the salt¬ 
bush, are not consonant with the heat values obtained, but still we 
will see that they are nearly so and that the saltbush residue yielded 
less than three-fifths as much energy per unit of weight as that from 
the alfalfa. 
§207. The corn fodder was found to be a good fodder, pro- 
'ducing a gain of 3^4 pounds in the three sheep. There was digested 
by the sheep in this instance 4,940 grams of dry matter, equal to 
56.3 per cent, of that consumed, 1,789 grams of which was soluble 
in alcohol, 1,245 grams soluble in hydric chlorid, and 1,210 insoluble. 
§208. In this case the sugars indicate the presence of a large 
portion of alcohol-soluble carbohydrates, glucose and cane sugar, 
together amounting to 872 grams, which is wholly digestible, and 
975 gi'ams in the form of galactan and xylan, sugars inverted by 
the action of the dilute hydric chlorid ; these practically constitute 
the whole of this class of substances in the corn fodder, as cold 
water, hot water and sodic hydrate together remove but 100 grams 
of sugars from the whole amount of corn fodder consumed; the 
cellulose is, of course, to be added to these to obtain the total carbo¬ 
hydrates. The furfurol removed by alcohol is very small in amount, 
so that while some pentosans are present the amount is at most, in¬ 
significant; 77.5 grams were consumed and the coefficient of diges¬ 
tion was found to be 94.8 per cent., so, aside from our knowledge 
of the fact that sucrose and reducing sugars occur in the juices of 
the corn stalk, there is no question but that the sugar found did not 
come from the inversion of other carbohydrates. The total amount 
of furfurol found to have been removed by hot water and malt 
seems to be open to cjuestion, as our duplicate determinations did 
not agree very well. The hydric chlorid extract furnished very 
nearly one-half of the sugars found and a little more than one-half 
of the furfurol found in the extracts of the fodder; this, of course, 
does not include the residue or cellulose. 
§209. The amount of proteids consumed with the corn fodder 
was much less than in the other two instances, alfalfa and saltbush. 
With the alfalfa 1,817 grams were consumed and 1,325 digested; 
