The Chemical News and Journal of Physical Science, Volumes 9 à 10

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Griffin, Bohn and Company, 1864
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Page 3 - President, in the chair. The minutes of the preceding meeting having been read and confirmed, The CHAIRMAN introduced Mr.
Page 230 - Briefly defined, then, transparency in liquids as well as in gases is synonymous with discord, while opacity is synonymous with accord between the periods of the waves of ether and those of the molecules of the body on which they impinge.
Page 248 - Then after describing the method of purifying the paraffine, the specification concludes as follows : — " Having thus described the nature of my invention, and the best means with which I am acquainted for performing the same, I hereby declare that I claim as my invention the obtaining of paraffine oil, or an oil containing paraffine and paraffine from bituminous coals by treating them in the manner hereinbefore described.
Page 15 - New Experiments Physico-mechanical, touching the spring of the air, and its effects ; (made for the most part in a new pneumatical engine) written .... by the honourable Robert Boyle, Esq* experiment xxxvi.
Page 210 - Accordingly he may afford to dispense with the aids supplied by the optical properties of bodies, though even to him they might be of material assistance. The properties alluded to are such as can be applied to the scrutiny of organic substances ; and therefore the examination of the bright lines in flames and incandescent vapours is not considered. This application of optical observation, though not new in principle (for it was clearly enunciated by Mr. Fox Talbot more than thirty years ago), was...
Page 5 - Ib. of iron in 15 minutes. It need scarcely be added that small quantities of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum and porcelain crucibles can be promptly accomplished in the smallest cylinder of this furnace ; and, in the case of platinum vessels, with this special advantage, that the oil-gas is free from those sulphurous compounds, the presence of which in coal-gas frequently causes...
Page 149 - If the arc be taken between platinum points in dry oxygen-gas over mercury, the gas diminishes indefinitely, until the mercury rises, and by reaching the point where the arc takes place, puts an end to |the experiment. I have caused as much as a cubic inch of oxygen to disappear by this means. I at one time thought this was due to the oxidation of the platinum ; but the high heat renders this improbable, and the deposit formed on the interior of the glass tube in which the experiment is made has...
Page 149 - ... and the effect of heat on liquids in which there is no dissolved gas may be to decompose them. Considerations such as these led me to try the effect of boiling on an elementary liquid, and bromine occurred as the most promising one to work upon ; as bromine could not be boiled in contact with water, oil, or mercury, the following plan was ultimately devised. A tube, 4 feet long and...
Page 4 - ... pints of oil in the hour. And here it requires remark that, with that continuous supply, when the furnace is large and is at a white heat, the oil does not rise in the funnel, being instantaneously converted into gas at the mouth of the burner, and thrown up in that state into the furnace for combustion. The operation, indeed, consists at that point of a rapid distillation of oil-gas, which is immediately burnt, in the presence of air supplied at a suitable pressure by a dozen blowpipes, in effective...
Page 210 - But while the chemist who attends to inorganic compounds may confine himself without much loss to the generally-recognized modes of research, it is to his cost that the organic chemist, especially one who occupies himself with proximate analysis, neglects the immense assistance which in many cases would be afforded him by optical examination of the substances under his hands. It is true that the method is of limited application, for a great number of substances possess no marked optical characters...

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