On the Cause, Date, and Duration of the Last Glacial Epoch of Geology, and the Probable Antiquity of Man: With an Investigation and Description of a New Movement of the EarthChapman & Hall, 1873 - 288 páginas |
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On the Cause, Date, and Duration of the Last Glacial Epoch of Geology, and ... Alfred Wilks Drayson Sin vista previa disponible - 2015 |
Términos y frases comunes
altitude angular distance annual arc joining arctic circle astronomical boulder period calculation cause centre of polar century circle round climatic changes cloth cold consequently course Crown 8vo curve traced decrease Demy 8vo deposits diagram drift earth earth's axis ecliptic Edition effects eocene equinoxes Europe evidence examine explain facts geological geologists geometrical given glacial epoch glacial period glaciers heat heavens Hevelius hitherto icebergs Illustrations investigation known land longitude meridian minute accuracy miocene mountains mounted moved northern hemisphere obliquity obtain occur plane pliocene polar motion polar movement pole position Post 8vo precession present probably problem produce proper motion Ptolemy relative revolution right angles right ascension rocks rotation round the pole Sciography sewed sheet snow stars sun's supposed surface tertiary theory tion traced a circle tropics valleys variation varies its distance vols whilst winter writer
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Página 61 - ... the moss everywhere unbroken, except where I applied the hammer to obtain some small specimens, which I shall bring away with me. The fact alone that these blocks differ in character from all other specimens which I have seen in my travels, amongst the thousands of boulders which are strewed over the great valley of the Missouri and Mississippi, from the Yellow Stone almost to the Gulf of Mexico...
Página 112 - Transactions, vols. xlviii. and xlix. ; Legrange in his Memoir on the Libration of the Moon; Vince in the Philosophical Transactions, 1787; M. La Place most elaborately in the Mecanique Celeste. Poisson, Sur le Mouvement de la Terre autour de son Centre de Gravite, gives a full description of this theory in the Memoires de I'Academie Royale, 1829 ; and M.
Página 246 - It is perfectly manifest that by weakening the sun's action, either through a defect of emission, or by the steeping of the entire solar system in space of a low temperature, we should be cutting off the glaciers at their source.
Página 260 - Translated by the late BB Woodward, and Edited by Henry Woodward. With 234 Maps and Illustrations and 23 Page Maps printed in Colors.