THE COMPOSITION OF DRY-FARM CROPS 277 
the milling process, likewise, are rich in nutritive 
elements. 
Future Needs 
It has already been pointed out that there is a 
growing tendency to purchase food materials on 
the basis of composition. New discoveries in the 
domains of plant composition and animal nutrition 
and the improved methods of rapid and accurate 
valuation will accelerate this tendency. Even now, 
manufacturers of food products print on cartons 
and in advertising matter quality reasons for the 
superior food values of certain articles. At least 
one firm produces two parallel sets of its manufac- 
tured foods, one for the man who does hard physical 
labor, and the other for the brain worker. Quality, 
as related to the needs of the body, whether of beast 
or man, is rapidly becoming the first question in 
judging any food material. The present era of high 
prices makes this matter even more important. 
In view of this condition and tendency, the fact 
that dry-farm products are unusually rich in the 
most valuable nutritive materials is of tremendous 
importance to the development of dry-farming. The 
small average yields of dry-farm crops do not look so 
small when it is known that they command higher 
prices per pound in competition with the larger 
crops of more humid climates. More elaborate 
investigations should be undertaken to determine 
