144 BULLETIN OF THE BUSSEY INSTITUTION. 
average, some 270 lbs. of albuminoids and 675 lbs. of carbohydrates 
(including about 24 Ibs. of fat) to the acre; and such a corn crop 
about 278 lbs. of albuminoids, and 2,000 lbs. of carbohydrates (includ- 
ing 156 lbs. of fat). 
It is true, no doubt, that peas, or a mixture of peas and maize, are 
better fitted for feeding growing swine than maize by itself. But, on 
the other hand, there is actually more nutriment of one kind and 
another in the 2,800 Ibs. of maize than in the 1,200 lbs. of peas. 
The 2,800 lbs. of maize, fed out without any addition, would, of 
course, be competent to rear and fatten, though in a chemically 
wasteful way, a certain number of pounds of pork, at a cost in terms 
of money which might be ascertained with no great difficulty in any 
given case; and it might well be true in many localities —so easy 
and certain is the cultivation of maize—that the cost per pound of 
the pork would not be lessened if the maize were mixed, even in the 
best possible proportion, with the peas. 
It is manifest that a question such as this, involving, as it does, so 
many different considerations relating to methods of tillage, the rota- 
tion of crops, and the manner of conducting a farm, will have to be 
determined by each individual farmer for himself. All that the chem- 
ist can do is to accumulate evidence relating to his own department 
of the subject, and call the farmer’s attention to some of the princi- 
ples upon which the decision of such a question should be based. 
In like manner, and perhaps more emphatically, it is, generally 
speaking, true that the use of simple grass, upon a cattle ranch or in 
regions of rocky hill pastures, is the best possible economic use of 
that kind of fodder; though in many parts of the country the inquiry 
may even now be pertinent, whether an addition of corn, or of mature 
fodder-corn, or of apples or of potatoes in their season, to young 
pasture grass, might not be economical and wise. . 
On contrasting our American methods of farming with those which 
prevail in Europe, it will be noticed immediately that only compar- 
atively small amounts of highly nitrogenous foddering materials are 
used in this country. We have pasture grass, to be sure, and red 
clover in some localities. ‘The cow-pea is grown as a forage crop in 
some districts at the South; and mixed peas and oats have been 
cultivated in some scattered localities at the North. Skim-milk and 
butter-milk are given to swine. But it is nevertheless true that our 
