American homes and gardens . io 3t ? I-Ya> First Floor and Four on the Second FloorTrimmed with Oak Soils and Their Nutrition. N order to understand the methods neces-sary for restoring worn-out soils, Mr. Spillman, of the Department of Agricul-ture, has recently published in one of thedepartments bulletins the principles whichunderlie the renovation of exhausted order to consider what occurs in a fertile soil that is grow-ing a large crop he asks us to imagine a cubic inch of ordin-ary field soil magnified into a cubic mile. It would then pre-sent very much the appearance of
American homes and gardens . io 3t ? I-Ya> First Floor and Four on the Second FloorTrimmed with Oak Soils and Their Nutrition. N order to understand the methods neces-sary for restoring worn-out soils, Mr. Spillman, of the Department of Agricul-ture, has recently published in one of thedepartments bulletins the principles whichunderlie the renovation of exhausted order to consider what occurs in a fertile soil that is grow-ing a large crop he asks us to imagine a cubic inch of ordin-ary field soil magnified into a cubic mile. It would then pre-sent very much the appearance of a mass of rocks varyingfrom the size of a pea to masses several feet in among these rock masses would be many pieces ofdecaying plant roots and other organic matter, resemblingrotting logs in a mass of stones and gravel. The masses oforganic matter would be found to contain large quantities ofwater and somewhat to resemble wet sponges, while everymass of rock would have a layer of water covering its sur-face. The open spaces between the solid masses would befilled with air. If a crop were growing on this
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectarchitecturedomestic
