Introductory Text-book of GeologyW. Blackwood & sons, 1854 - 136 Seiten |
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abundant accumulations agency appear argillaceous arrangement basalt beds bituminous boulders calcareous carboniferous chalk chemical chiefly clay clay-slate coal coal-measures colours compact composed composition conglomerates contain coral-reefs corals crust crustacea crystalline deposits districts drift earth earthquake encrinites England eocene epoch estuaries felspar fishes flagstones formation forms fossils frequent fresh-water geographical geologists geology globe gneiss granite gravel greenstone grits groups hornblende igneous rocks interstratified islands KEITH JOHNSTON lakes laminated lava layers lias lignite lime limestone lower magnesian marine marls masses metamorphic mica mineral mountain limestone numerous occur ocean old red sandstone oolite origin peat-mosses peculiar period Permian Physical Atlas plants and animals pleistocene PLIOCENE POST-TERTIARY present quartz regions remains of plants reptiles rivers rocky sand seams sedimentary shales shells silt silurian slates slaty strata stratified rocks structure surface termed tertiary texture thick tion trachyte trap trappean trilobites upheavals upper varieties vegetable volcanic wealden zoophytes
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Seite 13 - GENERAL AND DESCRIPTIVE GEOGRAPHY, exhibiting the Actual and Comparative Extent of all the Countries in the World, with their present Political Divisions. A New and Enlarged Edition, With a complete Index.
Seite 12 - Constructed from the best materials, and embodying the results of the most recent investigations, accompanied by a complete INDEX OF PLACES, in which the proper quantities are given by T.
Seite 15 - Quarterly Review. The Physical Atlas. By Alexander Keith Johnston, FRSE, FRGS, Geographer to the Queen for Scotland. Reduced from the Imperial Folio. This Edition Contains Twenty-Five Maps, including a Pateontological and Geological Map of the British Islands, with Descriptive Letterpress, and a very copious Index. In Imperial Quarto, half-bound morocco, £2, 12s. 6d. " Executed with remarkable care, and is as accurate, and, for all educational purposes, as valuable as the splendid large work (by...
Seite 12 - ... like flies walking over a great hill. All that can be seen from the top of the highest mountain to the bottom of the deepest mine is not more in comparison than the mere varnish on the outside of a school-globe.
Seite 16 - The extent to which this little Catechism has been circulated at home, its translation into nearly every European language, and its introduction into the Schools of Germany, Holland, Flanders, Italy, Sweden, Poland, and South and North America, while it has been gratifying to the Author, has caused him to take additional pains in improving and adding to the amount of useful information, in the present edition.
Seite 13 - They are as superior to all School Atlases within our knowledge, as were the larger works of the same Author in advance of those that preceded them.
Seite 9 - I become) ; that is, are converted into stony matter like the shells and bones found in the oldest strata. Now, as at present so in all former time must the remains of plants and animals have been similarly preserved ; and as one tribe of plants is peculiar to the dry plain, and another to the swampy morass, — as one family belongs to a temperate, and another to a tropical region, — so, from the character of the imbedded plants, are we enabled to arrive at some knowledge of the conditions under...
Seite 69 - These fishes seem to have thronged the waters of the period, and their remains are often found in masses, as if they had been suddenly entombed in living shoals by the sediment which now contains them." I beg leave to quote somewhat at length the picturesque language of Hugh Miller )• regarding these rocks as found in Scotland. "The river bull-head, when attacked by an enemy, or immediately as it feels the hook in its jaws, erects its two spines at nearly right angles with the plates of the head...
Seite 12 - School Atlas of Classical Geography. Comprising, in Twenty Plates, Maps and Plans of all the important Countries and Localities referred to by Classical Authors, constructed from the best materials, and embodying the Results of the most recent Investigations.
Seite 13 - ... changes, which commenced with the dawn of creation, and are continuing on into the future. " Had the exterior crust of the earth been subjected to no modifying causes, the world would have presented the same appearance now as at the time of its creation. The distribution of land and sea would have remained the same ; there would have been the same surface arrangement of hill, valley, and plain, and the same unvarying aspects of animal and vegetable existence.