Transactions of the American Institute of Mining Engineers, Том 10The Institute, 1882 |
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acetate added allowed ammonia amount analyses average boiling carbon carried cent charge chloride coal color complete construction containing copper cost County deposits determined direct dissolved engine experiments fact feet filter four furnace give given gold gram heat hydrochloric acid important inches Institute iron JOHN lead less Lower machine manganese manufacture mass material matte means meeting metal method miles mill mines nearly necessary nitric acid obtained operation oxide pass Philadelphia phosphorus Pittsburgh plate possible pounds practice precipitate present probably quantity quartz rock samples separation side silica silver slag solution square steel Street structure sufficient sulphuric acid surface taken temperature tests thickness tion tons upper vein washed weighed whole York City
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Страница 400 - Fourthly, where a manufacturer or a dealer contracts to supply an article which he manufactures or produces, or in which he deals, to be applied to a particular purpose, so that the buyer necessarily trusts to the judgment or skill of the manufacturer or dealer, there is in that case an implied term or warranty that it shall be reasonably fit for the purpose to which it is to be applied.
Страница xxxiv - The duties of all officers shall be such as usually pertain to their offices, or may be delegated to them by the Council or the Institute ; and the Council may in its discretion require bonds to be given by the Treasurer.
Страница 386 - ON STEELS PRODUCED BY MODERN PROCESSES. Instructions : — To investigate the constitution and characteristics of steels made by the Bessemer, open hearth, and other modern methods.
Страница 427 - ... varying from a few inches to two or three feet in thickness, and composed of two elements, humus and mineral matter.
Страница 57 - THE ELECTROLYTIC DETERMINATION OF COPPER, AND THE FORMATION AND COMPOSITION OF SO-CALLED ALLOTROPIC COPPER.
Страница xxxiii - To promote the arts and sciences connected with the economic production of the useful minerals and metals, and the welfare of those employed in these industries...
Страница xxxvi - The Institute is not, as a body, responsible for the statements of fact or opinion advanced in papers or discussions at its meetings, and it is understood that papers and discussions should not include matters relating to politics or purely to trade. VIII. AMENDMENTS. These Rules may be amended at any annual meeting by a two-thirds vote of the members present ; Provided, that written notice of the proposed amendment shall have been given at a previous meeting...
Страница 348 - But one strongly marked feature has been observed to characterize all of the veins. Those nearest to the intrusive rocks are always gold-bearing ; and those at a distance from them are invariably barren. This has been abundantly proven by innumerable examinations. No vein-mining for gold has ever been undertaken on the island, but I have caused numerous analyses to be made of specimens from various localities, always with the above results ; and further, as a natural influence, every stream running...
Страница 495 - Quincy had by far the highest per cent, and led in everything except mental arithmetic, and in that it stood third or fourth. This is the first time, so far as I know, that the foregoing statement has ever been made in public. We learned that...
Страница 453 - This metamorphic action was confined to a part of the alternate layers of Limestone and Chert, and very limited in its vertical extent — rarely exceeding 20 feet. The dolomization of the Limestone, and the simultaneous deposition of the ores, began either from horizontal crevices and then extended through the whole mass of one stratum of Limestone and was limited by the layers of Chert above and below, or it began from vertical crevices in the Limestone and formed a mass of Dolomized Limestone,...