| 1857 - 664 pages
...true his conclusion is, that the eflect of pressure on elongated particles or plates will be sucli as he describes it. Nevertheless, while knowing this...cannot accept his explanation of slate-cleavage.. 1 believe that even if these platea of mica were wholly absent, the cleavage of slate-rocks would be... | |
| 1860 - 394 pages
...with which Mr. Sorby has treated this question, I cannot accept his explanation of slate cleavage. I believe that even if these plates of mica were wholly absent, the cleavage of slate rocks would be much the same as it is at present. "I will not dwell here upon minor facts, —... | |
| John Tyndall - 1871 - 436 pages
...should not ascribe to them a large share in the production of the cleavage. I believe that, even if the plates of mica were wholly absent, the cleavage of...slate-rocks would be much the same as it is at present. Here is a mass of pure white wax: it contains no mica particles, no scales of iron, nor any thing analogous... | |
| John Tyndall - 1879 - 522 pages
...should not ascribe to them a large share in the production of the cleavage. I believe that even if the plates of mica were wholly absent, the cleavage of...slate-rocks would be much the same as it is at present. Here is a mass of pure white wax : it contains no mica particles, no scales of iron, or anything analogous... | |
| John Tyndall - 1892 - 482 pages
...should not ascribe to them a large share in the production of the cleavage. I believe that even if the plates of mica were wholly absent, the cleavage of...slate-rocks would be much the same as it is at present. Here is a mass of pure white wax : it contains no mica particles, no scales of iron, or anything analogous... | |
| John Tyndall - 1897 - 448 pages
...should not ascribe to them a large share in the production of the cleavage. I believe that even if the plates of mica were wholly absent, the cleavage of...slate-rocks would be much the same as it is at present. Here is a mass of pure white wax : it contains no mica particles, no scales of iron, or anything analogous... | |
| Liverpool Geological Society - 1901 - 550 pages
...sceptical as to the importance of the presence of mica, and says in a criticism of Sorby's views : " I cannot accept his explanation of slate-cleavage....slate-rocks would be much the same as it is at present."! * On the Theory of the Origin of Slaty Cleavage. — Phil. Mag., August, 1856. In his Presidential... | |
| Thomas Mellard Reade - 1903 - 456 pages
...sceptical as to the importance of the presence of mica, and says in a criticism of Sorby's views : ' I cannot accept his explanation of slate-cleavage....plates of mica were wholly absent the cleavage of slate rocks would be much the same as it is at present.' 1 These three views of Sedgwick, Sorby, and... | |
| Edward Fulton - 1911 - 336 pages
...should not ascribe to them a large share in the production of the cleavage. I believe that even if the plates of mica were wholly absent the cleavage of...slate-rocks would be much the same as it is at present. Here is a mass of pure white wax: it contains no mica particles, no scales of iron, or anything analogous... | |
| Royal Institution of Great Britain - 1858 - 600 pages
...mixed up in it ? It will be, he argues, and he argues rightly, to place the plates with their flat surfaces more or less perpendicular to the direction...plates of mica were wholly absent the cleavage of slate rocks would be much the same as it is at present. Here is a mass of pure white wax: there are... | |
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