Transactions of the Geological Society of Glasgow, Bind 8The Society, 1888 |
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207 BATH STREET Airdrie appearance Boulder-clay boulders Brachiopoda Brongniart calcareous Carboniferous strata character clay coal colour Cone-in-cone cones conglomerate crystalline crystals D. C. GLEN Davidson deposited district dolerite Drummuir Dugald Bell East Kilbride Edinburgh evidence examined excursion exhibited fakes fathoms feet fossils fragments genera genus Geological Society Geological Survey glacial glacier Glasgow Glen Roy granite hill ice-cap icebergs inches ironstone James Thomson John Young land layers Lepidodendron Linn localities Loch Loch Treig lower M'Coy miles mineral mountains MURDOCH observed occur Old Red Sandstone Phill position present quarry quartz quartzite read a paper remarks Report Roads rocks sand schists Scotland Scottish seen shale shells side silica Silurian SOCIETY'S ROOMS Spean species specimens Sphenopteris spores stone structure surface Tarbert theory thickness tion Transactions trees Treig upper valley Vice-President volcanic Whiteinch WILLIAM JOLLY
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Side 251 - Watching their leader's beck and will, All silent there they stood, and still. Like the loose crags whose threatening mass Lay tottering o'er the hollow pass, As if an infant's touch could urge Their headlong passage down the verge, With step and weapon forward flung, Upon the mountain-side they hung.
Side 322 - The equation of the level surface, as altered by any given transference of solid matter, is expressed by equating the altered potential function to a constant. This function, when expanded in the series of spherical harmonics, has for its first term the potential due to the whole mass supposed collected at its altered centre of gravity. Hence a spherical surface round the altered centre of gravity is the first approximation in Laplace's method of solution for the altered level surface. Mr Croll has...
Side 349 - On the Glacial Phenomena of Scotland, with reference to the Reports of the Boulder Committee of the Royal Society of Edinburgh.
Side 3 - ... of the calcium carbonate and other isomorphous bases. Dr. Dawson, in his Acadian Geology, 1868, asserts that the structure is produced by concretionary action proceeding from the surface of a bed or layer, and modified by gradual compression of the material.
Side 340 - ... This shows that if we were to have this change of temperature and this double snowfall for several hundred years, there would be a very sensible addition to the quantity of ice, and a very sensible depression on the water elsewhere. But if the Antarctic ice-cap were to be greatly increased it would lower the water, diminish the circulation, and tend to cool the Arctic Ocean. Therefore, from this consideration alone, we should expect glaciation in the northern hemisphere simultaneously with an...
Side 342 - STIRRUP) read the report of the Council for the past year, as follows : — REPORT OF THE COUNCIL, FOR SESSION 1890-91.
Side 250 - ... beach by the waves, present always their broader and longer surfaces ; and the broader and longer these surfaces are, the further are the stones propelled. They are not launched forwards, as a sailor would say, end on, but tumbled forwards broadside. They come rolling down a river in flood, or upwards on the shore in a time of tempest, as a hogshead rolls down a declivity. In the boulder-clay, on the contrary, most of the pebbles that bear the mark of their transport at all were not rotted, but...
Side 108 - The heat from which terrestrial volcanic energy is at present derived is produced locally within the solid shell of our globe by transformation of the mechanical work of compression or of crushing of portions of that shell, which compressions and crushings are themselves produced by the more rapid contraction, by cooling, of the hotter material of the nucleus beneath that shell, and the consequent more or less free descent of the shell by gravitation, the vertical work of which is resolved into tangential...
Side 280 - Gaudin's experiments on the fusion of quartz, which show that silex, as it cools, has the property of remaining in a viscous state, whereas alumina never does. This " gelatinous flint" is supposed to retain a considerable degree of plasticity long after the granitic mixture has acquired a low temperature; and ME de Beaumont suggests, that electric action may prolong the duration of the viscosity of silex.
Side 323 - ... this will produce will consist in a sinking in the first hemisphere and rising in the second, through heights varying according to the same law (that is, simple proportionality to sines of latitudes), and amounting at each pole to...