Proceedings of the Royal Society of Edinburgh, Volumen 2

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Royal Society of Edinburgh, 1851

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Página 149 - An address delivered at the anniversary meeting of the Geological Society of London, on the 19th of February, 1841 ; and the announcement of the award of the Wollaston medal and donation fund for the same year.
Página 462 - Observations on Days of Unusual Magnetic Disturbance, made at the British Colonial Magnetic Observatories, under the Departments of the Ordnance and Admiralty.
Página 360 - For it is not improbable, that other circumstances, besides those hitherto ascertained, may modify the preventive influence of the neutral salts. 8. When the water is judged to be of a kind which is likely to attack lead-pipes, or when it actually flows through them impregnated with lead, a remedy may be found, either in leaving the pipes full of the water, and at rest for three or four months, or by substituting for the water a weak solution of phosphate of soda, in the proportion of about a 25,000th...
Página 465 - THE AMERICAN JOURNAL OF SCIENCE AND ARTS. Conducted by PROFESSOR SILLIMAN and BENJAMIN SILLIMAN, JUN.
Página 397 - Zenith Sector; together with a Catalogue of the Stars which have been observed, and the Amplitude of the Celestial Arcs, deduced from the Observations at the different Stations. 4to, sewed, 7s.
Página 386 - DENT (EJ) On the Errors of Chronometers, and explanation of a new construction of the Compensation-Balance. 8vo. London 1842. On the Errors of the Chronometrical Thermometer. 8vo. London 1843. DILLWYN...
Página 452 - TRANSACTIONS of the Society instituted at London for the Encouragement of Arts, Manufactures and Commerce, with the Premiums offered in the year 1783.
Página 360 - I conceive, right to add, that in all cases, even though the composition of the water seems to bring it within the conditions of safety now stated, an attentive examination should be made of the water after it has been running for a few days through the pipes ; for it is not improbable that other circumstances, besides those hitherto ascertained, may regulate the preventive influence of the neutral salts.
Página 285 - Mr. Kemp has observed, in repeating this process for me, the very curious fact, that as soon as the action is complete and the oily impurities are destroyed, but not sooner, the chloroform tested with the acid in a tube, exhibits a strongly convex surface downwards, where it rests on the pure acid, or, what is the same thing, the acid becomes concave at its upper surface. The smallest trace of impurity, not sufficient to affect the density of the chloroform, we have found to render the line of junction...
Página 337 - Rara Mathematica ; or a Collection of Treatises on the Mathematics and Subjects connected with them, from ancient inedited MSS. by JO HALLIWELL, 8vo.

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