This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ...ground contains, on the average, a higher per cent. of water than contiguous unrolled soil does, and this concentration of water above is at the expense of water from below. Rains frequently give rise to a translocation of water also. During my study of soil moisture it was observed on several occasions that when samples of soil were taken just before a rain and then again after it, in the same locality, there was a marked decrease in the amount of water contained in some of the lower strata, and the same effects I have been able to produce at will, in illlustration of which the following cases are cited: On a strip of fallow ground of light clay soil, underlaid at a depth of 18 inches by a medium grained sand, water to the amount of two pounds to the square foot on an area of...

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