Articoli correlati a Practical exercises in geography Volume 1; Our own...
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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. 1915 Excerpt: ...by the halting ice sheets. These moraines are often discernible as one travels across the country. The soils of the Prairie Plains are known as glacial drift soils and are noted for their fertility and, owing to their great depth, for their endurance. The Prairie Plains constitute one of the wealthiest agricultural regions in the United States. The region is reasonably well drained. Lakes therefore are not numerous. However, there are portions of Indiana and Illinois where the divides between the rivers are wide and low, and where swamps still exist. A good example is found in the rather large area along the Kankakee River in northwestern Indiana. These swamp areas when well drained make the richest of agricultural lands. The rivers which drain the Prairie Plains often have rather shallow valleys, as is seen especially in some of the rivers in Iowa. Some of the larger rivers, like the Illinois and Mississippi, were in existence before the glacial invasion, and at one time were outlets of the Great Lakes. As a result, their valleys are wider and deeper and are characterized by lines of picturesque bluffs. While agriculture is the leading industry in the Prairie Plains, mining and manufacturing are very important. The output of the great interior coal field in Illinois and Indiana is enormous. The oil industry in this region is also important. Though the flow of oil is waning in Indiana, a new district has been opened up in southeastern Illinois, that is now producing vast quantities of oil. Refineries are often established at the towns and cities near the oil wells. Lawrenceville, Illinois, engages largely in the refining industry. Because agriculture is so important and coal so near at hand, many thriving towns in the Prairie Plains engage in the manufactur...
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- EditoreRareBooksClub.com
- Data di pubblicazione2012
- ISBN 10 1154818063
- ISBN 13 9781154818062
- RilegaturaCopertina flessibile
- LinguaInglese
- Numero di pagine54
- Contatto del produttorenon disponibile
(nessuna copia disponibile)
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