The American Journal of ScienceJ.D. & E.S. Dana, 1903 |
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Termos e frases comuns
acid acutilirata angle axinite beds biforata Brachiopoda Carboniferous character collection color condenser coronas costata Creek Cretaceous crystals curves cylinder deposits described determined developed Devonian diameter dorsal electrical entocarotid Eocene eruptive evidence experiments fact fauna figure flora fold foramen Fork formation forms fossils fultus genus Geol geological given glass hallux igneous igneous rocks increase jelly tube Jour Journal Klamath Mountains laccoliths lachrymal laticosta latter Lemuroidea lemurs length limestone lines lower lynx magma magnet mass measured metallic meteorite mineral Niagara normal observed obtained occur Ordovician original Orthida Paleozoic paper phosphorus plane plates Platystrophia plications plutonic position premolar present pressure Primates probably Prof Professor region rocks rotation schists SCI.-FOURTH SERIES Semionotus shales shell shown Silurian sinus solution species specimens sperrylite structure surface temperature tion troilite twist upper vapor velocity ventral volts water nuclei wire
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Página 74 - To explore, enjoy and render accessible the mountain regions of the Pacific Coast; to publish authentic information concerning them; to enlist the support and cooperation of the people and the Government in preserving the forests and other natural features of the Sierra Nevada Mountains.
Página 90 - It presents in an inexpensive form, considering its great amount of matter, with freshness, owing to its weekly issue, and with a satisfactory completeness...
Página 90 - LIVING [AGE; and with them Katharine Tynan, Maxwell Gray, George [Meredith, Fiona Macleod, Maurice Maeterlinck, Hilaire Belloc, Sir [Rowland Blennerhassett, Eugene Melchiorde Vogue, Paul Bourget...
Página 90 - VOLUME still maintains the high standard of literary excellence which has characterized it from the beginning. It presents in an...
Página 90 - LIVING AGE will send it by mail, postpaid, to any name not already on the subscription lists, for THREE MONTHS, Thirteen Weeks, FOR ONE DOLLAR, These thirteen issues will aggregate about eight hundred and fifty octavo pages of the World's Best Current Liters* ture.
Página 74 - ... an incontestibly stiller image than when still air was used. As a further test, a series of artificial double stars was now provided, and the concave mirror, acting both as collimator and objective, brought the images to focus, where they were examined by an eyepiece. With the stillest air obtainable, the images were not sharp and only the coarsest doubles were resolvable. Then the blower was started and the definition immediately became sharp. Violently stirring the air in the tube, then, eliminates...
Página 274 - Since the temperatures of a block and its enclosing magma are practically identical, the final step in deciding on their relative densities in depth is taken, if it can be shown what is the relative compression suffered by the solid and liquid. Again we must have recourse to the valuable experiments of Barus as those, of any known to the writer, most nearly related to the problem at issue. He concludes, as a net result of his investigations, that ' the relation of the meltingpoint to pressure in...
Página 74 - boiling " of the image is due to air without the tube, but a not unimportant part to the air within it; and in the preliminary experiments the air, kept still in the tube by treating it with the ordinary precautions, was found •to have little effect on the ordinary "boiling" of the image, which so seriously prejudices the definition.
Página 455 - The uniform undisturbed condition of the strata of this and adjoining States, will not allow the presumption of upheaval and such dislocation of strata as would account for these phenomena."* Starting with the assumption of the "undisturbed condition...
Página 275 - But his diabase fusion curve demonstrates that the thermal expansibility of the liquid rock is about 1-9 times as great as that of the solid rock. Thus a block of cold, solid gabbro immersed in a deep-seated molten magma of the same chemical composition, would be less condensed by the pressure than the molten rock, but the effect on relative densities would be partly compensated by any superheating of the magma.