File:The American educator; completely remodelled and rewritten from original text of the New practical reference library, with new plans and additional material (1919) (14598420948).jpg

Identifier: americaneducator05fost (find matches)
Title: The American educator; completely remodelled and rewritten from original text of the New practical reference library, with new plans and additional material
Year: 1919 (1910s)
Authors: Foster, Ellsworth D., ed Hughes, James L. (James Laughlin), 1846-1935
Subjects: Encyclopedias and dictionaries
Publisher: Chicago, Ralph Durham Co.
Contributing Library: Internet Archive
Digitizing Sponsor: Internet Archive

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on,while in the Atlantic system the Saint Law-rence, di-aining the region of the GreatLakes, occupies first place. Other streamsworthy of mention are the Hudson, the Dela-ware and the Potomac. The Gulf systemincludes the Mississippi, with all its tribu-taries, draining the greater part of that por-tion of the United States lying between theAppalachian and Rocky Mountain highlands.To this must be added the Rio Grande delNorte, which drains a portion of the plateauwest of the Rocky Mountains. The Colo-rado, flowing into the Gulf of California,occupies a position peculiar to itself anddrains the southern portion of the RockyMountain plateau. Of the streams flowingdirectly into the Pacific, the Columbia andthe Frazer are the most important, while inthe northwest the Yukon, flowing into Ber-ing Sea, is one of the largest and most im-portant rivers in the Arctic regions. North America contains a larger numberof lakes than any other continent. Asidefrom the Great Lakes, which have an area of
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PLANT LTFE OP NORTH AMERICA 2585 See, also, full-page illustration Plant Life of United States, in article United States. NORTH AMERICA 2586 NORTH AMERICA more than 90,000 square miles, there are, inthe north, Great Beai Lake, Great SlaveLake and Athabasca Lake, each of which isan inland sea; also. Lake Winnipeg, Lakeof the Woods and Rainy Lake. In the re-gions of both the Appalachian and RockyMountain highlands are found hundreds ofsmall lakes, some of which have been formedby glacial action, while others occupy thecraters of extinct volcanoes. Mineral Resources. The eastern half ofNorth America is much the older, and theLaurentian Plateau and the Height of Landconstitute the oldest land known. The rockshere are coarse, and their surface has beenworn and rounded so that no high elevationsare found. South of the Saint LawrenceRiver and the Great Lakes, these highlandscontain valuable deposits of coal and iron,which have been extensively mined in NovaScotia, Pennsylvania, New York and

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