The book Field Operations of the Division of Soils, 1899 was written by author United States Dept of Agriculture Here you can read free online of Field Operations of the Division of Soils, 1899 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Field Operations of the Division of Soils, 1899 a good or bad book?
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White crust un- der loose soil from hillside, 3 miles SE. of Gunni- son. CaSOj . NaSOi . MgSO^. MgClj . NaCl -. 1.27 73.40 3.14 89.03 25.33 7.83 7.18 4.47 85.33 3.51 95.60 Samples 4165 and 4166 represent the alkali as found in the soil, while 4170 and 4171 were collected to represent some of the possible sources of the salts. In each of these samples gypsum is present in sufficient quantity to prevent the formation of black alkali in a well-aerated soil. In the foothills south of Gunnison rock ...salt is mined; the streams cutting through these hills are likely to become contaminated with this salt and carry it to the irrigated lands below, much to their detriment. No actual exposure of the salt is at present visible along the stream beds, but the underground flows and heavy floods, no doubt, carry much of this salt valleyward. One of the highland canals, running along the base of these hills, leaked in a gravelly place and the resulting seepa.ge at the foot of the hill was heavily charged with salt and formed a heavy crust over the surface of the ground.
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