Southern agriculture

Paperback | January 9, 2012

byFranklin Sumner Earle

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This historic book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1908. Not illustrated. Excerpt: ... trolling humidity. When a warm wind laden with moisture from the sea passes over the land, it becomes chilled in rising over high hills or mountains, since, as we have seen, these are cooler than the lower levels. Cool air cannot contain as much moisture as warm air, hence part of it is squeezed out and falls as rain. As a rule the windward side of a mountain range is wet, while the leeward side is dry. We thus find that the east coast of Mexico and Central America, which is exposed to the sweep of the northeast trade wind, has a heavy rainfall. In passing over the high mountains of the interior these warm, moist winds become cooled and lose their moisture, so that as they descend on the western side and again become warmed they are very dry. What are practically desert conditions prevail over large areas of the western side of these countries. The same thing occurs in South America and in the more mountainous of the West India Islands. Porto Rico and Jamaica have a very heavy rainfall on the north side of the mountains, but on the southern side it is so dry that irrigation is necessary for the profitable production of most crops. If our hypothetical chain of mountains extended across the Mississippi Valley, the south side would not only be warmer, but it would have much heavier rainfall, since more of the moisture from the Gulf would be deposited; while the northern side would not only be cold, but very dry. The Soil Formation of Soils. -- The earth or finely divided substratum in which the ordinal')7 land plants grow and extend their roots is called the soil. It consists of more or less minute rock particles mixed with decomposed vegetable matter. The rocks that formed on the cooling of the earth's crust in the early geological ages soon began to be d...

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This historic book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1908. Not illustrated. Excerpt: ... trolling humidity. When a warm wind laden with moisture from the sea passes over the land, it becomes chilled in rising over...

Format:PaperbackDimensions:74 pages, 9.69 × 7.44 × 0.15 inPublished:January 9, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217054382

ISBN - 13:9780217054386

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