...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...

...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...

...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...

...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...

...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...

...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...

...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...

...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...

...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...

...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...