io — 
how great the relative increase of this substance is as the 
plant matures. Former analyses made at this Station have 
made it enormous. 
The ashes of the principal samples have been analyzed 
to aid in forming some clear notion of the amount of plant 
food, other than nitrogen, required to produce a crop of 
alfalfa hay. We have no theory concerning the benefit of 
alfalfa growing to wheat exhausted soils, but simply, seek 
the facts and their explanation to which, as before stated, 
this bulletin is simply a contribution. 
PROTEIDS. 
The fodder analyses of the first cutting give the.follow- 
ing results for the amount of proteids, dates of collection 
being omitted except in the first instance. This sample was 
secured May 5th; plant 21 inches high; no blossoms; buds 
not visible ; stem red; leaves small, dark green; air dried mat¬ 
ter (hay) 27.53 per cent.; moisture, 72.74 per cent. Another 
plant with green stem, broader leaves of light green color, 
and equally immature as the preceding gave 28.21 per cent, 
hay and 74.79 per cent, water. The proteids in the above 
samples were respectively 19.95 percent, and 21.79 per cent. 
Proteids in first cutting alfalfa hay:— 
Per cent. 
1 
2 
n 
o 
4 
5 
6 
7 
8 
Plants 
< i 
i ( 
green, (average of preceding) . .20.87 
green, but nearing bloom.15*60 
beginning to bloom.14.30 
in half bloom.14.41 
in full bloom.14.08 
in full bloom . .. . •.13.95 
just past full bloom.13.38 
in full seed.12.16 
Average.14.85 
Proteids in second cutting alfalfa hay:— 
Per cent. 
1. Plants not yet in bloom.16.40 
2. “ just coming in bloom.18.47 
3. “ in half bloom.16.11 
4. “ in ^ to bloom.13.03 
5. “ in full bloom.12.88 
6. “ half ripe.12.50 
7. ' “ half ripe.11.65 
Average.14.43 
Proteids in third cutting alfalfa hay:— 
Per cent. 
1. Hay, College Farm. I2 *53 
2. “ Rocky Ford Station.13.57 
Average. I 3*°5 
