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Pagina 636 - The use of almond-oil and of olive-oil was not followed by any remedial effect, but from cocoa-nut oil results were * obtained almost as decided as from the oil of the liver of the Cod, and the author believes it may turn out to be a useful substitute.
Pagina 635 - It had been long before the public, but had not progressed in market value, as it would have done had its application been successful. He considered it to lead to much error in practice, that the exact nature of the action of charcoal on ammonia was not better understood by the public. Freshburnt charcoal would absorb a large quantity of ammoniacal gas, but it was a mistake to suppose that it would consequently abstract ammonia from a liquid impregnated with it ; on the contrary, water had the power...
Pagina 757 - ... under such circumstances. Examples of such an approximation of atoms of similar character were not wanting, even amongst inorganic bodies : thus the compounds of chlorine with oxygen were remarkable instances of the union of like atoms ; and we saw in several of them the truth of the foregoing proposition fully borne out. Hypochlorous, chlorous, and chloric acids were all distinguished by the intense energy of their affinities and contrasted strongly with the compounds of oxygen or chlorine with...
Pagina 655 - ... must therefore be confined to dead matter ; but such apprehensions are, it is believed, groundless, or, at all events, premature. All parts of living structures are allowed to be in a state of incessant change, of decomposition and renewal. The decomposition occurring in a living membrane...
Pagina 433 - ... to 1 oz. measure of water, proceeding in like manner as with the alumina solutions, the process being hastened by interposing one pair of small Smee's battery in the circuit. With a very slow and feeble action of the battery, the color of the deposited metal was much whiter than that of the aluminium, closely approximating to that of silver; its other properties I have not yet had time to examine.
Pagina 128 - Now as one-quarter of an ounce of zinc requires only 0.06 of an ounce of oxygen to form oxide of zinc, Mr. Kukla draws the conclusion that the rest of the oxygen is converted directly into electricity ; and this view, he says, is confirmed by the large amount of electricity given out by the battery in proportion to the zinc consumed in a given time. In the above battery each zinc plate had a surface of forty square inches. The addition of per-oxide of manganese does not increase the 'effect of the...
Pagina 687 - Bunsen means, by this word, the concentration to a single point of the electrical undulations, in a manner analogous to the concentration of luminous or calorific rays in the focus of a concave mirror. Let us take, for example, a charcoal crucible, in communication with the positive pole of the battery, and place in it a small capsule of glazed porcelain containing the liquid to be decomposed ; the space between the crucible and the capsule is filled with hydrochloric acid, and the liquid of the...
Pagina 667 - I slightly wet it with either of these acids diluted, and then well wipe the acid off from the surface. Afterwards it is laid upon a piece of calico or paper, or common wood, and by a stroke of the press an impression is taken, which is, of course, quite invisible ; but by exposing this impression, immediately after, to the action of a strong heat, a most perfect and beautiful representation of the printing wood instantaneously appears. In the same way, with the same plate of wood, without any other...
Pagina 128 - This battery is very cheap, antimony being only 5d. per lb., wholesale, and the zinc not requiring amalgamation. The second arrangement tried by Mr. Kukla was antimony and amalgamated zinc, with only one exciting solution, viz. : concentrated sulphuric acid. This battery has great heating power, and the former great magnetizing power.
Pagina 636 - The whole quantity abstracted having been weighed, the coagulum was drained on bibulous paper for four or five hours, weighed, and divided into two portions. One portion was weighed, and then dried in a water-oven, to determine the water. The other was macerated in cold water until it became...

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