SUGAR FACTORY FEEDS AND OIL MEALS 199 
undecorticated, so-called cold-pressed cotton-seed cake; this is the 
product obtained when the whole uncrushed seed is subjected to the 
cold-pressure process for the extraction of oil. The difference in the 
value of the two kinds of meal is readily seen from the following 
average analyses: 
Composition of Cotton-seed Meal and Cold-pressed Cotton-seed Cake, in Per Cent 
Cc -seed | Cold-pressed 
et ae a eae 
Moisture............... 7.0 7.6 
BD eniven ee aad eens 6.6 4.9 
Protel ys. sce vs wads ore 45.3 24,2 
PAD OY ices scraciice haees ae 3 6.3 21.1 
Nitrogen-free extract... . 24.6 32.5 
At accuse oats Motes 10.2 9.7 
100.0 100.0 
Recent analyses of cotton-seed meal appear to run considerably 
lower in protein than given above, viz., about 42 or 41 per cent, 
with fat likewise lower (about 8 per cent), and fiber higher (10 per 
cent). The trade recognizes three grades of cotton-seed meal: 
Choice, prime, and good. The former “ must be finely ground, not 
necessarily bolted, perfectly sound and sweet in odor, yellow, free 
from excess of lint, and must contain at least 41 per cent protein.” 
The protein limits for prime and good cotton-seed meal are 38.6 
per cent and 36 per cent, respectively. The analyses given above 
indicate the difference in the value of the decorticated and cold- 
pressed cotton-seed cake. The high fiber content of the latter feed 
is important, and the result is shown by the lower digestibility of 
this feed compared with cotton-seed meal.® 
Average Per Cent Digestibility of Decorticated and Cold-pressed Cotton-seed Cake 
Nitrogen- 
Protein Fat free 
extract 
Decorticated cotton-seed meal| 86 93 77 
Cold-pressed cotton-seed cake.} 74 90 55 
Tt is evident, from the differences in the protein and fiber con- 
tents of the two feeds, that cotton-seed meal is a much more valu- 
able seed than cold-pressed cake, although the latter ordinarily 
® Pott, ‘“ Handb. tier. Ernéhrung,” iii, 2, p. 102. 
