82 Tiii^ Colorado Experiment Station. 
classes of hays as shown by the ordinary fodder analyses. 
§192. The differences between the hay of leguminous plants 
and that of grasses is further shown by the large portion removed 
by simple solvents such as water and alcohol. The total amount 
dissolved out of the air-dried hays by 80 per cent, alcohol and water 
in the order followed in this work is for alfalfa, 40 per cent.; red 
clover hay, 35 per cent.; pea vine hay, 34 per cent.; timothy hay, 
31 per cent.; native hay, 30 per cent.; corn fodder, 37 per cent.; 
sorghum, 47 per cent., and the saltbush experimented with, 28 per 
cent. The 80 per cent, alcohol extracts from these air-dried fod¬ 
ders and hays, the following amounts: From alfalfa, 27 per cent.; 
corn fodder, 29 per cent.; timothy hay, 21 per cent.; native hay, 21 
per cent.; sorghum, 36 per cent., and from the saltbush hay, 22 per 
cent. A quantity of alfalfa was digested with cold water for 24 
hours and the loss then determined, when it was found to be 40 per 
cent. Apparently then, water alone will remove from alfalfa as 
large an amount of extractives as alcohol and water when used 
successively; this was not established by repetitions of this experi¬ 
ment. No precaution was taken against fermentative changes. 
This result is consonant with the well known susceptibility of alfalfa 
to injury by moisture, even a heavy dew sufficing to discolor it. I 
did not submit the hay to the ordinary fodder analysis after treat¬ 
ing it in this manner. The results would doubtlessly have been in¬ 
teresting if I had done so, but I have an old analysis of a hay dam¬ 
aged by a succession of showers necessitating the exposure of 
the hay to both extraction and fermentation. Making no allow¬ 
ance for the large loss of weight, which must have been suffered 
in this case, we have the following difference in the hay as cut and 
gathered: Crude fibre as cut 26.46 per cent., as gathered 38.83 
per cent.; crude proteid as cut 18.71 per cent.; as gathered ii.oi 
per cent.; and the nitrogen-free extract 38.91 per cent, as cut, and 
33.64 per cent, as gathered. These results are affected by the 
mechanical losses as well as chemical, but they serve to suggest 
that it is not only an important consideration for the farmer but a 
good point of attack for the student of such subjects. The hays 
made from the grasses, and the native hay, being a mixture of gras¬ 
ses and sedges, may in this respect be fairly representative of such 
as are usually used in hay making, yield just about one-half as much 
to alcohol and water as the leguminous hays. 
§193. The other well known class of fodders represented in 
our study is corn fodder. The dry matter of this fodder differs 
according to the ordinary fodder analyses from that of the legumin¬ 
ous hay in containing nearly one-half more nitrogen-free extract, 
and from one-third to one-half as much crude proteid, while the 
