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The Chemical News and Journal of Industrial Science; with which is ..., Volum 10
Visualització completa - 1864
The Chemical News and Journal of Industrial Science; with which is ..., Volum 78
Visualització completa - 1898
The Chemical News and Journal of Industrial Science; with which is ..., Volum 3
Visualització completa - 1861
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Pàgina 259 - The minutes of the previous meeting having been read and confirmed, The PRESIDENT...
Pàgina 250 - I claim as my invention, and desire to secure by letters patent, is the obtaining of paraffine oil, or an oil containing paraffine, and paraffine, from bituminous coals, by treating ihem in manner hereinbefore described.
Pàgina 30 - ... further geological movements becomes again exposed to the action of its natural solvents, water and carbonic acid, and is thus restored to active service in the organisms of plants and lower animals, through which it passes, to complete the mighty cycle of its movements into the blood and tissues of the human frame. While circulating thus, age after age, through the three kingdoms of nature, phosphorus is never for a moment free. It is throughout retained in combination with oxygen, and with...
Pàgina 232 - The sensation of light is excited by waves of ether shorter and more quickly recurrent than those which fall beyond the extreme red. But why should iodine stop the former and allow the latter to pass ? The answer to this question no doubt is that the intercepted waves are those whose periods of recurrence coincide with the periods of oscillation possible to the atoms of the dissolved iodine.
Pàgina 232 - His source of heat throughout these comparative experiments consisted of a spiral of platinum wire, raised to incandescence by an electric current of unvarying strength. The quantities of radiant heat absorbed and transmitted by each of the liquids at the respective thicknesses were first determined ; the vapours of these liquids were subsequently examined, the quantities of vapour employed being proportional to the quantities of liquid traversed by the radiant heat. The result of the comparison...
Pàgina 212 - 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...
Pàgina 276 - ... cause, that the plaintiff Young is an inventor of this class, and that his patent is entitled to the protection of the law. I find that he has ascertained, by a course of laborious experiments, a particular class of materials among many, and a particular process among many, which has enabled him to create and introduce to the public a useful manufacture, which amply supplies the market with that which, until the use of the materials, and process, and temperature indicated by him, had never been...
Pàgina 305 - They showed* that a burning surface of magnesium wire, which, seen from a point at the sea's level, has an apparent magnitude equal to that of the sun, effects on that point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53