SOME COLORADO GRASSES. 
131 
The methods of analyses and terms used are 
described in Bulletin No. 8, pages 9 and 10. For this 
bulletin, ninety-nine samples of grasses and forage plants 
were analyzed. When anything unusual in the analysis 
occurred, the analysis was duplicated. Eighteen samples, 
in part or in whole, were thus duplicated. Some of the 
samples were very ripe, others were at their best. Two 
samples were treated with petroleum ether, as a compari¬ 
son with absolute ether, for fat. The petroleum ether 
gave, in one case, .2 per cent, too small; in the other 
case, .7 per cent, too small. The high ash of some 
samples, rivaling that of tobacco, must be due to the same 
cause, viz., fine sand mechanically blown upon the 
gummy plant. In determining crude fiber we have 
found that it filters quicker if it is treated, first , with 
caustic potash, and then with sulphuric acid. There is 
no difference in the results. It is reasonable to expect 
some unusual results from such grasses. The following 
table contains some of the extremes of the analyses: 
RICH IN CRUDE PROTEIN AND CRUDE FAT, 
POOR IN CRUDE FIBER. 
NAME. 
Crude 
Protein. 
Crude Fat. 
Crude 
Fiber. 
Fransfvria. disenior. 
20.98 
4.02 
11 10 
Trifolium ericephalum. 
19.25 
3 96 
14 15 
Lactuca ludoviciana. 
18.67 
7.12 
14 00 
Melilotus alba. 
17.85 
3.65 
14 04 
Poterium Sanguisorba (Burnett). 
16.86 
6.25 
13 60 
Cleome integrifolia. 
16.84 
9.00 
17 00 
Yellow trefoil clover. 
14.85 
4.42 
12 23 
Iva axillaris (poverty weed). 
14.35 
6.36 
11 60 
Lupinus leucophyllus. 
13.84 
3.64 
15 76 
Lupinus, species. 
13.82 
3.61 
15 86 
Alsike clover. 
13.68 
4.55 
14.82 
