Advanced Text-book of Geology, Descriptive and Industrial

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Blackwood, 1859 - 403페이지
 

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113 페이지 - Bright ran at one time a great hazard, and suffered considerable pain from accidentally plunging one of his legs into the hot clay. * From whatever spot the sulphur is removed, steam instantly escapes ; and, in many places, the sulphur was so hot that we could scarcely handle it. From the smell, I perceived that the steam was mixed with a small quantity of sulphurated hydrogen gas.
407 페이지 - A quiet humour, an easy, graceful style, a deep, thorough, confident knowledge of human nature in its better and more degrading aspects, a delicate and exquisite appreciation of womanly character, an admirable faculty of description, and great tact, are the qualities that command the reader's interest and respect from beginning to end of
413 페이지 - ALISON. History of Europe. By Sir ARCHIBALD ALISON. Bart., DCL 1. From the Commencement of the French Revolution to the Battle of Waterloo. LIBRARY EDITION, 14 vols., with Portraits. Demy 8vo, £10, 10s.
418 페이지 - By ALEXANDER KEITH JOHNSTON, FRSE. &c., Geographer to the Queen for Scotland. A New and Enlarged Edition, consisting of 35 Folio Plates, and 27 smaller ones, printed in Colours, with 135 pages of Letterpress, and Index. Imperial folio, half-bound morocco, £8, 8s. " A perfect treasure of compressed information."— At> John Hsrsdtet.
321 페이지 - ... with beds of oysters, muscles, and other shells adhering to the rocks on which they grew, the fish being all dead, and exhaling most offensive effluvia.
420 페이지 - The work of which they form a part will be, when completed, the most practically useful which has ever appeared upon subjects with which every man ought to be acquainted. All should read it and refer to it, until the knowledge it imparts is as familiar as are already the matters of which it treats. Such knowledge is calculated not only to increase our personal comfort and abridge our expenses, but to give an impetus to experiment and invention, and to lead to results of the highest importance.
18 페이지 - In the preceding chapter we have endeavoured to explain that the object of geology is to investigate the structure of the earth, in as far as that structure is accessible to human investigation. Combining all we know of this rocky structure, from the top of the highest mountain to the bottom of the deepest mine, it forms but an insignificant film of the four thousand miles which lie between the surface and centre of the globe. This film or outer portion is spoken of as the " crust of the globe" in...
113 페이지 - At the bottom of this hollow we found a caldron of boiling mud, about fifteen feet in diameter, similar to that on the top of the mountain, which we had seen the evening before ; but this boiled with much more vehemence. We went within a few yards of it, the wind happening to be remarkably favourable for viewing everv part of this singular scene.
275 페이지 - Egypt, where it was largely quarried of old for the building of the Pyramids, into Asia Minor, and across Persia by Bagdad to the mouths of the Indus. It occurs not only in Cutch, but in the mountain ranges which separate Scinde from Persia, and which form the passes leading to Caboul ; and it has been followed still farther eastward into India, as far as eastern Bengal and the frontiers of China.
201 페이지 - ... water ; but the case is somewhat different with beds of coal. This mineral, being chiefly composed of carbon, hydrogen, and oxygen — the same elements which enter into the composition of plants — and revealing in its mass evidence of vegetable structure, no doubt is entertained of its organic origin. But whether the plants of which it is composed were drifted down by rivers, and deposited along with layers of mud and sand in estuaries, or whether dense forests and peat-mosses were submerged,...

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