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Ammonites appear associated base beds belong blocks bones British Brocastle Carboniferous Carboniferous Limestone chalk character clay close common compared considerable containing continued deposits described Devonian direction district Drift east evidence examination existence extended fauna feet formation fossils fragments Geological gravel grey Hill inches iron known latter less Lias Liassic lime limestone localities Lower marked marl Martin mass Middle miles Moore natural nearly North North Devon noticed numerous observed occupied occur Old Red Sandstone organic pass period Phill plate Pleistocene portion position present probably Professor proved quarry range referred remains remarkable represented rest river rocks sand seen shales shells side similar slates Society South species specimens Stone strata structure surface Sutton Terg thickness traces Upper valley veins White whole zone
xxxi 페이지 - On the Elevation and Denudation of the District of the Lakes of Cumberland and Westmoreland.
lxiv 페이지 - In conclusion, he showed that the various silicates already mentioned were directly deposited in •waters in the midst of which the Eozoon was still growing or had only recently perished, and that they penetrated, enclosed, and preserved the structure of the organisms precisely as carbonate of lime might have done ; and he cites these and other facts...
322 페이지 - supported wholly or in part by annual voluntary contributions, and shall not, and " by its laws may not, make any dividend, gift, division, or bonus in money unto or " between any of its members, and provided also that such society shall obtain the " certificate of the barrister-at-law or lord advocate, as hereinafter mentioned.
263 페이지 - If all specimens of Eozoon were of the acervuline character, the comparisons of the chamber-casts with concretionary granules might have some plausibility. But it is to be observed that the laminated arrangement is the typical one; and the study of the larger specimens, cut under the direction of Sir WE Logan, shows that these laminated forms must have grown on certain strata-planes before the deposition of the overlying beds, and that the beds are, in part, composed of the broken fragments of similar...
74 페이지 - Progress of the Geological Survey of Canada from its commencement to 1863. Atlas of Maps and Sections, with an introduction and appendix.
279 페이지 - Arranged to meet the requirements of the Syllabus of the Science and Art Department of the Committee of Council on Education, South Kensington.
179 페이지 - Counties, indubitable specimens of the Bos longifrons from freshwater deposits, which are rich in the remains of Elephas and Rhinoceros.
260 페이지 - I have not found in any of these fragments a canal system similar to that of Eozoon Canadense, though there are casts of large stolons, and, under a high power, the calcareous matter shows in many places the peculiar granular or cellular appearance which is one of the characters of the supplemental skeleton of that species. In a few places a tubulated cell-wall is preserved, with structure similar to that of Eozoon Canadense. " Specimens of Laurentian limestone from Wentworth, in the collection of...
370 페이지 - Ragged stone, and of the dykes at its base (xiv. xx.), the ratio of the oxygen of the silica to that of all the bases taken together is nearly as 3 : 2.
253 페이지 - Vennor's section, which is appended, has a thickness of more than 21,000 feet ; but the possible occurrence of more numerous folds than have hitherto been detected, may hereafter render necessary a considerable reduction. These measures appear to be arranged in the form of a trough, to the eastward of which, and probably beneath them, there are rocks resembling those of Grenville, from which the former differ considerably in lithological character ; it is therefore supposed that the Hastings series...