. Meat, milk and money, how to produce the latter by increasing the former . ingre-dients in the by-products of the flouring mills, aremaking large use of them, and by carefully savingthe droppings from their cattle and applying themto the land, are transferring the great fertility ofthe Northwest to other districts. In this depletionof the soil of the Northwest by almost exclusiveAvheat growing, and in transferring the fertilitytaken up by this crop to other regions in the by-products of milling, we are experiencing one of thegreatest economic changes ever witnessed in Ameri-can agriculture.
. Meat, milk and money, how to produce the latter by increasing the former . ingre-dients in the by-products of the flouring mills, aremaking large use of them, and by carefully savingthe droppings from their cattle and applying themto the land, are transferring the great fertility ofthe Northwest to other districts. In this depletionof the soil of the Northwest by almost exclusiveAvheat growing, and in transferring the fertilitytaken up by this crop to other regions in the by-products of milling, we are experiencing one of thegreatest economic changes ever witnessed in Ameri-can agriculture. Art. 413. Phosphoric acid and potash are the Essentiatwo mineral compounds which are not always held constituents ofby the soil in sufficient quantity to give profitable p rtiliyprscrops and must be supplied in the form of manure orfertilizers. Art. 4x4. The quantity of nitrogen, phosphoricacid and potash found in the various feeding stufifsis given in Table No. 3 of the Appendix. The ex-amples presented below are abstracted from thattable for the purpose of illustration:. XTS IN CommercialFertilizers Feeding Stuffs Kiirog-cn Piio-Til)iricA. id. Potash Wheat straw Timothy hay Clover Corn LI)?.5.!) 3 8 ^0 IGIJ Wheat Oil nieal,0. P - .. From this table we learn that wheat straw con-tams pounds of nitrogen, and timothy hay morethan twice as much, or pounds. Clover hay isricher than timothy hay in nitrogen, and especiallyin potash, though poorer in phosphoric acid. Weobserve a larger quantity of all fertilizing constit-uents, especially phosphoric acid and potash, inzvheat bran than in the zuheat grain, fromwhich bran is derived. This is because the starchypart of the wheat grain used for flour holds littlefertility, while the outside portion of the grain whichgoes into the bran contains most of the nitrogen andash. Art. 420. The soil in parts of our country isnow so depleted tha
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