Geology for general readers1870 |
From inside the book
Page 18
... mass a weight far exceeding that which its astronomical relations will allow . * Again , as we descend into the earth by mines , shafts , and Artesian wells , the temperature seems to increase at a given ratio ( about one degree Fahr ...
... mass a weight far exceeding that which its astronomical relations will allow . * Again , as we descend into the earth by mines , shafts , and Artesian wells , the temperature seems to increase at a given ratio ( about one degree Fahr ...
Page 18
... mass a weight far exceeding that which its astronomical relations will allow . * Again , as we descend into the earth by mines , shafts , and Artesian wells , the temperature seems to increase at a given ratio ( about one degree Fahr ...
... mass a weight far exceeding that which its astronomical relations will allow . * Again , as we descend into the earth by mines , shafts , and Artesian wells , the temperature seems to increase at a given ratio ( about one degree Fahr ...
Page 19
... masses from which they were originally derived . It is necessary , then , to bear in mind this technical use of the term " rock ; " and the least reflection upon the changes ( mechanical and chemical ) which all rock - matter is ...
... masses from which they were originally derived . It is necessary , then , to bear in mind this technical use of the term " rock ; " and the least reflection upon the changes ( mechanical and chemical ) which all rock - matter is ...
Page 20
... masses . These two modes of arrangement may be seen in almost every railway - cutting and sea - cliff , and must obviously have arisen from different causes . Now the great maxim in geology is to reason from the known to the unknown ...
... masses . These two modes of arrangement may be seen in almost every railway - cutting and sea - cliff , and must obviously have arisen from different causes . Now the great maxim in geology is to reason from the known to the unknown ...
Page 21
David Page. geneous masses , and not in layers or bed above bed . And when we go to the volcano or burning - mountain , and ob- serve the discharges of molten lava , which when cooled assume a structure scarcely distinguishable from that ...
David Page. geneous masses , and not in layers or bed above bed . And when we go to the volcano or burning - mountain , and ob- serve the discharges of molten lava , which when cooled assume a structure scarcely distinguishable from that ...
Common terms and phrases
accumulations ages America ancient antiquity areas arrangement aspects beds bituminous calcareous Cambrian Carboniferous Chalk changes chemical chiefly clays climate coal coal-fields course Cretaceous Crown 8vo crustacea crystalline debris decay deposits distribution of sea drifted dry land earth's crust eocene estuaries Europe existing extinct feet fishes flora and fauna formations forms fossils Geography geologists geology glacial epoch glacier globe gradually gravel heat higher igneous incessant ironstones islands lakes latitudes Laurentian lava less lignites limestones lower mammals masses matter MESOZOIC metamorphism mineral miocene nature newer numerous occur ocean Old Red Sandstone older Oolite operations organic PALEOZOIC partly period physical plants and animals pliocene portion present recent regions reptiles rivers rock-matter rocks rocky sand schists sea and land secondary sediments shales shell-fish shells silts Silurian Sketch soil species stage stone strata stratified surface terrestrial tertiary thickness tion Triassic variety vegetable veins vital volcano vulcanic zoophytes
Popular passages
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Page 5 - We must admire the ability and persevering research with which he has succeeded in imparting to his 'Manual' so much freshness and originality. In no respect is this character more apparent than in the plan of arrangement, by which the author commences his description of the physical geography of each tract by a sketch of its true basis or geological structure.
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Page 49 - This earth, like the body of an animal, is wasted at the same time that it is repaired. It has a state of growth and augmentation; it has another state, which is that of diminution and decay. This world is thus destroyed in one part, but it is renewed in another; and the operations by which this world is thus constantly renewed, are as evident to the scientific eye, as are those in which it is necessarily destroyed.
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Page 3 - ... this respect the Dictionary is most valuable and thoroughly reliable. As to the etymology of words, it is exhibited in a form that fixes itself upon the memory, the root-words showing the probable origin, of the English words, their primary meaning, and their equivalents in other languages. Much useful information and instruction relative to prefixes, postfixes, abbreviations, and phrases from the Latin, French, and other languages, &c., appropriately follow the Dictionary, which is throughout...