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Sayfa 197 - We are the priests of material development, of the work which enables other men to enjoy the fruits of the great sources of power in nature and of the power of mind over matter. We are priests of the new epoch, without superstitions...
Sayfa 203 - ... or certain mathematical combinations so that he can build a railroad, but has also learned what made a little peninsula in the Adriatic the mistress of the world, or how Roman law became the basis of the jurisprudence of Christendom, or how the fall of empires was foreshadowed in the " Republic " of Plato, or how the growth of a corrupt and privileged ecclesiasticism brought about the transformation of modern Europe ; the time will never come...
Sayfa 205 - The college in its four years of discipline, training, teaching and development, makes the boy the man. His Latin and his Greek, his rhetoric and his logic, his science and his philosophy, his mathematics and his history, have little or nothing to do with law or medicine or theology, and still less to do with manufacturing or mining, or storekeeping, or stocks, or grain, or provisions. But they have given to the youth when he has graduated, the command of that superb intelligence with which God has...
Sayfa 340 - The students spend some time in mines, going systematically through the different kinds of work^ and thus becoming sufficiently familiar with mine operations to listen understandingly to lectures on the subject. It is the merit of Prof. HS Munroe, of Columbia College, to have given to the summer school of mining such an impetus that to-day there is hardly an American mining school without this auxiliary course. Before discussing in detail the equipment of a laboratory, it is desirable to consider...
Sayfa 375 - J inches square at the top and 2£ inches square at the bottom. This retains the metal, matte, and foul slag, and is removed after every tapping by means of iron hooks inserted through rings on either side. The clean slag overflows into an ordinary conical slag pot, 14 inches in diameter and 16£ inches deep.
Sayfa xx - The Proceedings of the Society, and such papers or abstracts as may be approved by the Council, shall be published as soon as possible after each annual meeting. 8. AMENDMENTS. — This Constitution may be amended by a two-thirds...
Sayfa 378 - The delivery-pipe is cooled by suspending from it an iron trough filled with cotton waste, which is kept wet. Reduction of zinc oxide or sublimation of arsenic, realgar and sulphur are rare operations, and no special apparatus is assigned for this purpose. 4. Crystallization. — The principal process coming under this head is the Pattinson process, for which a cast-iron kettle [58] is used, 21 inches in diameter and 14 inches deep, covered with a hood and heated by a fire-place 21 inches square....
Sayfa 374 - The tuyere pipes are of wrought-iron steam pipe; the horizontal arm has at one end a conical turned bronze nozzle, at the other a T, the vertical leg of which is connected by a pipe with the tuyere bag, and the horizontal leg, reduced in diameter by a bushing, is closed with a cap having a glass-covered peep hole. The bustle pipe is 4 inches in diameter. The bottom of the furnace is closed by a wrought iron plate clamped to the collar of the four columns. The crucible is lined with brasque tamped...
Sayfa 373 - ... commonly used for treating coarse copper-bearing pyrites previous to smelting in the blast furnace. It is 3 feet 3 inches deep, 2 feet 3 inches wide and 3 feet 7 inches high to the spring of the arch. The arch is 6 inches high. The walls are 4 inches thick and well anchored. The oar is roasted on a temporary grate of wrought-iron bars. The front is bricked up half-way, the upper half being closed by an iron plate with peephole. The charge varies from 1500 to 2000 pounds, and a roast lasts from...
Sayfa 366 - ... washing machines or into the sewer. 10. Auxiliary Apparatus. — By referring to the plan (Fig. 1) and its legend, the different auxiliary apparatus used in ore-dressing and in metallurgical work can easily be seen. Prominent among these are, for instance, the steam drying-tables [19], on which the products are dried so as to permit comparison of the weights of ore before and after treatment. The plan does not show the thirty-odd large bins, 4 feet wide, 4 feet deep, and 4 feet high, for ores,...

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