 | Alexander von Humboldt - Industries - 1811 - 666 pages
...tracts of land have occasioned another more important evil. Muriate of soda and lime, nitrate of potash, and other saline substances, cover the surface of...these efflorescences, hostile to cultivation, the table-land of Mexico bears a great resemblance in many places to Thibet and the saline steppes of central... | |
 | Alexander von Humboldt - Mexico - 1824 - 364 pages
...tracts of land have occasioned another more important evil. Muriate of soda and lime, nitrate of potash, and other saline substances, cover the surface of...these efflorescences, hostile to cultivation, the table-land of Mexico bears a great resemblance in many places to Thibet and the saline steppes of central... | |
 | Friedrich Wilhelm H. Alexander freiherr von Humboldt - 1824 - 364 pages
...tracts of land have occasioned another more important evil. Muriate of soda and lime, nitrate of potash, and other saline substances, cover the surface of...these efflorescences, hostile to cultivation, the table-land of Mexico bears a great resemblance in many places to Thibet and the saline steppes of central... | |
 | Conrad Malte-Brun - Atlases - 1826 - 654 pages
...planting, but by artificially drying up extensive tracts of land, they have occasioned a still more important evil. The muriates of soda and of lime,...saline substances, cover the surface of the soil. They have spread themselves with a degree of rapidity which the chemist feels it difficult to explain.... | |
 | Josiah Conder - Voyages and travels - 1830 - 380 pages
...planting, but, by artificially drying up extensive tracts of land, they have occasioned a still more important evil. The muriates of soda and of lime,...saline substances, cover the surface of the soil. They have spread themselves with a degree of rapidity which the chemist feels it difficult to explain.... | |
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Mexico, who have not only destroyed without planting, but in draining great tracts of land have occasioned another more important evil. Muriate of soda and lime, nitrate of potash, and other saline substances, cover the surface of the soil, and spread... 