Rivers of North America: A Reading Lesson for Students of Geography and Geology |
Other editions - View all
Common terms and phrases
adjacent aggrading alluvial cones alluvium anticlinal Appalachians areas baselevel basin border bottom branches broad calcium carbonate canyon carried cascades caverns changes chemical climate consequent streams corrasion curves debris decrease deepen its channel deepen their channels delta deposition distributaries divide drainage basin drainage slope drained earth's crust elevation erosion escarpment excavated favourable feet flood-plain floods frequently furnished geographical Geological glacial glaciers gorges grade gradient gravel greater Gulf of Mexico hard rock horizontal illustrated increase influence instances lakes land layers less load lower courses main stream master streams material meandering migration miles Mississippi mountains mouth North America occur peneplain percolating plain portion previously produced progress rain-fall region removed result ridges rills river sand sediment side silt soft rocks solution square miles stage stream channels stream development stream terraces streams flowing synclinal tilted tion topographic forms transportation tributaries valley vegetation velocity volume Yukon
Popular passages
Page iii - Every river appears to consist of a main trunk, fed from a variety of branches, each running in a valley proportioned to its size, and all of them together forming a system of valleys, communicating with one another, and having such a nice adjustment of their declivities, that none of them join the principal valley, either on too high or too low a level; a circumstance which would be infinitely improbable, if each of these valleys were not the work of the stream that flows in it.
Page 326 - No student of this most interesting phase of the problems of life can afford to remain in ignorance of the wide range of facts and the suggestive series of interpretations which Professor Loeb has brought together in this volume.
Page 326 - London. The Reproduction of Living Beings. By Professor MARCUS HARTOG. Queen's College, Cork. Man and the Higher Apes. By Dr. A. KEITH, FRCS Heredity. By J. ARTHUR THOMPSON, School of Medicine, Edinburgh. Life Areas of North America: A Study in the Distribution of Animals and Plants. By Dr. C. HART MERRIAM, Chief of the Biological Survey, US Department of Agriculture. Age, Growth, Sex, and Death. By Professor CHARLES S. MINOT, Harvard Medical School. Bacteria. Dr. JH GLADSTONE. History of Botany....
Page 325 - The results of modern science are of use in nearly every profession and calling, and are an essential part of modern education and culture. A series of scientific books, such as has been planned, should be assured of a wide circulation, and should contribute greatly to the advance and diffusion of scientific knowledge. The volumes will be in octavo form, and will be fully illustrated in so far as the subject-matter calls for illustrations. GP PUTNAM'S SONS, NEW YORK & LONDON EDITED BY J.
Page 39 - In whatever direction a body moves on the surface of the earth, there is a force arising from the earth's rotation, which deflects it to the right, in the northern hemisphere, but to the left, in the southern.
Page 46 - We may consider the level of the sea to be a grand base level, below which the dry lands cannot be eroded; but we may also have, for local and temporary purposes, other base levels of erosion, which are the levels of the beds of the principal streams which carry away the products of erosion. (I take some liberty in using the term level in this connection, as the action of a running stream in wearing its channel ceases, for all practical purposes, before its bed has quite reached the level of the...
Page 325 - Columbia University, with the cooperation of FRANK EVERS BEDDARD, FRS, in Great Britain. Each volume of the series will treat some department of science with reference to the most recent advances, and will be contributed by an author of acknowledged authority. Every effort will be made to maintain the standard set by the first volumes, until the series shall represent the more important aspects of contemporary science. The advance of science has been so rapid, and its place in modern life has become...
Page i - New Haven Leader. 3. — Rivers of North America. A Reading Lesson for Students of Geography and Geology. By ISRAEL C. RUSSELL, Professor of Geology, University of Michigan, author of " Lakes of North America," " Glaciers of North America," '• Volcanoes of North America,
Page 69 - Samples of water were collected daily at surface, mid-depth, and bottom. These samples were secured in a small keg, heavily weighted at the bottom and provided at each of its heads with a large valve, opening upward. These valves allowed a free passage to the water while the keg was sinking to the required depth, but prevented its escape while being drawn up. When the keg reached the surface, the water contained in it was thoroughly stirred and a bottle filled from it. On returning to the office,...