Gleanings in Science, כרך 1Baptist Mission Press, 1829 |
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מהדורות אחרות - הצג הכל
מונחים וביטויים נפוצים
alkalis Ampullaria antimony apparatus appears ascertained barometer basalt calcination Calcutta Calder Capt Captain carbonic acid cause circumstances clay colouring matter common considerable considered containing cooling correction degree depression determined dew point disoxygenating effect equal error evaporation experiments fact feet fevers fluid formula Geology give gneiss grains granite Haidingerite heat hills hornblende hygrometer inches India Indigo instrument labour length lime limestone liquid malaria mass Mean results measure mercury metal method muriatic muriatic acid nature nearly object observed obtained oxyde oxygen paper pendulum plant precipitate present produce proportion quantity quartz remark render river rock sal ammoniac salt sand sandstone scale silica Society solution species specific gravity specimens steam stone strata substance sufficient sulphuret sulphuric sulphuric acid supposed surface temperature thermometer tion tube vapour vegetable vessel weight wood
קטעים בולטים
עמוד 120 - This fork is to be brought down under the shoulder, near the top of each rod, and made fast to it by passing a pin through two little holes in the claws. The rods are thus drawn up, about seven feet at a time, which is the usual distance between each joint, and at every haul a fork, fig.
עמוד 157 - Lemery were correct, that the action of sulphur on iron may be a cause of volcanic fires, sulphate of iron ought to be the great product of the volcano ; which is known not to be the case ; and the heat produced by the action of sulphur on the common metals, is quite inadequate to account for the appearances. When it is considered that volcanic fires occur and intermit with all the phenomena that indicate intense chemical action, it seems not unreasonable to refer them to chemical causes. But for...
עמוד 120 - In attaching and detaching these lengths of rod, a wrench, fig. 10, is employed, by which they are turned round, and the screws forced up to their firm bearing. The boring is sometimes performed for the first sixty or a hundred feet, by a chisel of...
עמוד 76 - Inks of various colors may be made from a strong decoction of the ingredients used in dyeing, mixed with a little alum or other substance used as a mordant, and gum arabic.
עמוד vii - A mere man of letters, retired from the world, and allotting his whole time to philosophical or literary pursuits, is a character unknown among Europeans in India, where every individual is a man of business in the civil or military state, and constantly occupied either in the affairs of government, in the administration of justice, in some department of revenue or commerce, or in one of the liberal professions...
עמוד 120 - ... rods augmenting in the progress of the operation, sometimes to the extent of several hundred feet, render it extremely inconvenient, if not impossible to raise them by hand. A tripedal standard is therefore generally constructed, by three scaffolding poles tied together, over the hole, as...
עמוד 119 - The situation of the intended well being determined on, a circular hole is generally dug in the ground, about six or eight feet deep, and five or six feet wide. In the centre of this hole the boring is carried on by two workmen, assisted by a laborer above. The...
עמוד 156 - A bottle of water holding about } of a pint, with a long narrow neck, was emptied immediately in the aperture from which the vapours pressing out the lava issued, and the neck was immediately closed. This air examined on my return was found to give no absorption with solution of potassa; so that it contained no notable proportion of carbonic acid, and it consisted of 9 parts of oxygen and 91 of azote.
עמוד 366 - It thus appears that the very fact of the top inclining, causes the point to shift its place, and so that it cannot rest until it come again directly under the centre of the top. It is remarkable that even in philosophical treatises of authority the standing of a top is still vaguely attributed to centrifugal force.
עמוד 157 - ... existed, should not be found in the lava, and be disengaged with the saline or aqueous products from the bocca or craters. There are many instances in England of strata of mineral coal which have been long burning; but the results have been merely baked clay and schists, and it has produced no result similar to lava. If the idea of Lemery were correct, that the action of sulphur on iron may be a cause of volcanic fires, sulphate of iron ought to be the great product of the volcano; which is known...