 | Jean André Luc - 1810 - 444 pàgines
...it. This is, indeed, supposed by Mr. Playfair, when he says, relatively to this subject, p. 102 : " Every river appears to " consist of a main •- trunk,...running in a valley proportioned " to its size." And at p. 1 1 3, speaking of a large valley, he says, " Into this, open a multitude of " transverse or... | |
 | John Playfait - 1822 - 668 pàgines
...shores, inland, we meet at every step with the fullest evidence of the same truths, and particularly in the nature and economy of rivers. Every river appears...forming a system of vallies, communicating with one another, and having such a nice adjustment of their declivities, that none of them join the principal... | |
 | George Fairholme - 1837 - 490 pàgines
...Illustrations of the Huttonian thwry of thc, Earth, by Professor Playfair. the sea coasts,) " and particularly in the nature and economy of rivers. Every river appears...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... | |
 | 1908 - 724 pàgines
...Tributary and Main Streams. — As that eminent Scotsman, Playfair, so clearly stated over a century ago, " Every river appears to consist of a main trunk, fed...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... | |
 | Archibald Geikie (Sir).) - 1897 - 320 pàgines
...rocks by the water flowing over them. As the generalization was beautifully expressed by Playfair : " Every river appears to consist of a main trunk, fed...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... | |
 | Israel Cook Russell - 1898 - 406 pàgines
...BY GP PUTNAM'S SONS Civ Unlclietboclicr prces, Hew Uon; j ff — »«.•-. _ ^ " Library o (jus " Every river appears to consist of a main trunk, fed...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... | |
 | 1900 - 704 pàgines
...argument finds excellent illustration in the often quoted passage regarding the origin of valleys: "Every river appears to consist of a main trunk, fed...forming a system of vallies, communicating with one another, and having such a nice adjustment of their declivities that none of them join the principal... | |
 | Charles Redway Dryer - 1901 - 444 pàgines
...studying the other. It is of the greatest importance that stream action be actually studied in the field. "Every river appears to consist of a main trunk fed...size, and all of them together forming a system of valleys, communicating with one another, and having such a nice adjustment of their slopes that none... | |
 | Charles Redway Dryer - 1901 - 450 pàgines
...studied in the field. "Every river appears to consist of a main trunk fed frcm a variety of brandies, 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 slopes that none... | |
 | Oliver Joseph Thatcher - 1907 - 484 pàgines
...evidence of the same truths, and particularly in the nature and economy of rivers. Every river seems to consist of a main trunk, fed from a variety of...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... | |
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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... 
