The American Journal of Science and ArtsS. Converse, 1855 |
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Populære avsnitt
Side 4 - I mean stock to remain in this country, to the United States of America, to found at Washington, under the name of the Smithsonian Institution, an establishment for the increase and diffusion of knowledge among men.
Side 6 - ... as they shall deem best suited for the promotion of the purpose of the testator, anything herein contained to the contrary notwithstanding.
Side 12 - And the said regents shall make, from the interest of said fund, an appropriation, not exceeding an average of twenty-five thousand dollars annually, for the gradual formation of a library, composed of valuable works pertaining to all departments of human knowledge.
Side 299 - Parallel of latitude lying between Dona Ana on the Rio Grande and Pimas Villages on the Gila ; by Lieut.
Side 128 - Principles of Geology; or, the Modern Changes of the Earth and its Inhabitants considered as illustrative of Geology. Ninth Edition. Woodcuts. 8vo. 18s. - Manual of Elementary Geology ; or, the Ancient Changes of the Earth and its Inhabitants illustrated by its Geological Monuments.
Side 149 - Report on the Agriculture and Geology of Mississippi; embracing a sketch of the Social and Natural History of the State, by BLC Wailes, Geologist of Mississippi, published by order of the Legislature.
Side 242 - This vein varies in thickness from a few inches to about two and a half feet, and we may state its average width at not less than eighteen inches. It is bounded by regular and well-defined, nearly parallel walls, the prevailing material of which is a coarse, soft granite, composed chiefly of white feldspar and quartz. " It would seem to be a pretty general fact that such of these veins as are confined entirely or...
Side 51 - That they happen at all seasons of the year and at all hours of the day ; but that they are generally most severe in the spring and in the autumn.
Side 179 - ... least. Whenever a garnet or a lump of quartz was imbedded in compact feldspar, and favorably presented to the action of the sand, the feldspar was cut away around the hard mineral, which was thus left standing in relief above the general surface.
Side 53 - Remarks on the changes which take place in the structure and composition of mineral veins near the surface, with particular reference to the East Tennessee Copper Mines.