 ... certain; and the conclusive evidence given of the age of the Huron, would thus appear to settle that of the Lake Superior rocks, in the position given to them by Dr. Houghton, the late State Geologist of Michigan, as beneath the lowest known fossiliferous...  Report on the North Shore of Lake Huron - Halaman 20oleh Geological Survey of Canada, Sir William Edmond Logan - 1849 - 51 halamanTampilan utuh - Tentang buku ini
 | Geological and Natural History Survey of Minnesota - 1889 - 804 halaman
...Houghton, the late state geologist of Michigan, as beneath the lowest known fossiliferous depcsits, a position which, as will be seen by a reference to...evidences on the Canadian side of lake Superior itself." The positive error embodied in the foregoing paragraph is the attempt to parallelize the Huron rocks... | |
 | 1857 - 976 halaman
...position give to them by Dr. Houghton, the late State Geologist of Michigan, as beneath the lowest fossiliferous deposits, a position which, as will...evidences on the Canadian side of Lake Superior itself."* In order to arrive at a better understanding of the matter in question, we will briefly notice some... | |
 | Roy Fontaine - 1850 - 346 halaman
...deposits — a position which, as will be seen by a reference to the Report of 1846, appeared to Mr. L. to derive some support from evidences on the Canadian side of Lake Superior itself." We now arrive at the scene of immediate attraction, the Bruce mines; but even on that head we are compelled... | |
| |
