 | 1843 - 504 pages
...it as not unworthy of being farther entertained. My theory of glacier Motion then is this :• — 'A GLACIER is AN IMPERFECT FLUID, OR A VISCOUS BODY. WHICH IS URGED DOWN SLOPES OF A CERTAIN INCLINATION BY THE MUTUAL PRESSURE OF ITS PARTS. The sort of consistency to which we refer... | |
 | James David Forbes - 1843 - 480 pages
...not unworthy of being farther entertained. My theory of Glacier Motion then is this : — A GLACIEB is AN IMPERFECT FLUID, OR A VISCOUS BODY, WHICH IS URGED DOWN SLOPES OF A CERTAIN INCLINATION BY THE MUTUAL PRESSURE OF ITS PARTS. The sort of consistency to which we refer... | |
 | 1844 - 608 pages
...for our acceptance, founded upon these observations, and deduced from these facts, is this : — " A glacier is an imperfect fluid or a viscous body, which is urged down slopes of a certain inclination by the mutual pressure of its parts." This modification of Saussure's theory... | |
 | 1844 - 638 pages
...as a great truth, the theory of Professor Forbes, which is embodied in the following proposition — a GLACIER IS AN IMPERFECT FLUID, OR A VISCOUS BODY, WHICH IS URGED DOWN SLOPES OF A CERTAIN INCLINATION, BY THE MUTUAL PRESSURE OF ITS PARTS. The idea embodied in this proposition is,... | |
 | 1845 - 624 pages
...resulting from his well-conducted and long-continued observations, is expressed in these words:— " A glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain inclination by the mutual pressure of its parts."—(p. 365). And the only hesitation we... | |
 | Wilhelm Wittich - 1845 - 432 pages
...compound of ice and water, more or less yielding according to its state of wetness or infiltration. It ' is an imperfect fluid, or a viscous body, which is urged down the slopes of a certain inclination by the mutual pressure of its parts, and he compares it to a thick... | |
 | John Lee Comstock - 1847 - 434 pages
...after examining and setting aside the chief previous theories, announces his own, as follows : — " A glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain inclination, by the mutual pressure of its parts." It is, therefore, the gravity of its own... | |
 | 1848 - 404 pages
...every other theory which has already been propounded as to the formation of glaciers, Forbes contends, that " a glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain inclination, by the mutual pressure of all its parts," and in our opinion, he establishes... | |
 | Henry Thomas De La Beche - 1851 - 888 pages
...during summer, move slowest, and are, as it were, dragged down by the central parts." J His theory is, that " a glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain inclination by the mutual pressure of its parts." § He does not, however, " doubt that glaciers... | |
 | Charles Williams - 1854 - 662 pages
...Forbes, by numerous and diverse experiments, before he saw the bishop's work, to announce the great truth that " a glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain inclination by the mutual pressure of its parts." The idea thus embodied, is, doubtless,... | |
| |
Comparing that motion to the flow of a river, he propounded the theory that " a glacier is an imperfect fluid or a viscous body, which is urged down slopes of a certain inclination by the mutual pressure of its parts. 
