Chemical and pharmaceutical manipulations

Lindsay and Blakiston, 1857 - 626 ˹

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˹ 381 - Iron cement. This mixture is used for making permanent joints generally between surfaces of iron. Clean iron borings, or turnings, are to be slightly pounded, so as to be broken but not pulverized ; the result is to be sifted coarsely, mixed with powdered sal ammoniac and sulphur, and enough water to moisten the whole slightly. It is then to be rammed or caulked into the joints, and the latter drawn together as tightly as possible.
˹ 7 - Walker on Intermarriage. Or, the Mode in which, and the Causes why, Beauty, Health, and Intellect result from certain Unions, and Deformity, Disease, and Insanity from others. With Illustrations. By ALEXANDER WALKER, Author of " Woman," " Beauty,
˹ 634 - DR. HEADLAND. ON THE ACTION OF MEDICINES IN THE SYSTEM. Being the Prize Essay to which the Medical Society of London awarded the Fothergillian Gold Medal for 1852. Second Edition. 8vo. cloth, 10s. MR. HIQGINBOTTOM, FRS, FRCS AN ESSAY ON THE USE OF THE NITRATE OF SILVER IN THE CURE OF INFLAMMATION, WOUNDS, AND ULCERS. Second Edition. Price 5s. ADDITIONAL OBSERVATIONS' ON THE NITRATE OF SILVER; with full Directions for its Use as a Therapeutic Agent.
˹ 633 - A THEORETICAL AND PRACTICAL TREATISE ON MIDWIFERY INCLUDING THE DISEASES OF PREGNANCY AND PARTURITION. Revised and Annotated by S. TARNIER. Translated from the Seventh French Edition by WR BULLOCK, MD Royal 8vo, over noo pages, 175 Illustrations, 30s.
˹ 274 - The materials in the first column are to be cooled, previously to mixing, to the temperature required, by mixtures taken from either of the preceding tables.
˹ 204 - ... called the index is then placed upon the top of the bar, and confined in its place by a ring or strap of platinum passing round the top of the register, which is partly cut away at the top, and tightened by a wedge of porcelain. When such an arrangement is exposed to a high temperature, it is obvious that the expansion of the metallic bar will force the index forward to the amount of the excess of its expansion over that of the black-lead, and that, when again cooled, it will be left at the point...
˹ 100 - ... from the fulcrum, and, at the same time, by its oblique action to raise or depress it, so as to furnish a means of bringing the points of support and the fulcrum into a right line. A piece of wire, four inches long, on which a screw is cut, proceeds from the middle of the beam downwards. This is pointed to serve as an index, and a small brass ball moves on the screw, by changing the situation of which the place of the centre of gravity may be varied at pleasure. The fulcrum, as before remarked,...
˹ 383 - Horse dung, chopped hay and straw, horse and cow hair, and tow cut short, are amongst the number. When they are used they should be added in small quantity, and it is generally necessary to add more water than with simple lute, and employ more labour to obtain an uniform mixture.
˹ 100 - ... the centre of gravity may be varied at pleasure. The fulcrum, as before remarked, rests upon an agate plane throughout its whole length, and the scale-pans are attached to planes of agate which rest upon the knifeedges forming the points of support. This method of supporting the scale-pans, we have reason to believe, is due to Mr. Cavendish. Upon the lower half of the pillar to which the agate plane is fixed, a tube slides up and down by means of a lever which passes to the outside of the case....
˹ 100 - Y s, when in action, sustain the whole beam. When the lever is freed from a notch in which it is lodged, a spring is allowed to act upon the tube we have mentioned, and to elevate it. The upper Y s first meet the agate planes carrying the scale-pans and free them from the knife-edges. The lower Y s then come into action and raise the whole beam, elevating the central knife-edge above the agate plane.