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Seite 248 - Boond do hereby particularly describe and ascertain the nature of my said invention, and in -what manner the same is to be performed, as follows ; that is to say...
Seite 248 - To all to whom these presents shall come, &c.: — Now know ye, that in compliance with the said proviso. I, the said John Henry Cassell, do hereby declare that the nature of my invention, and the manner in which the same...
Seite 260 - Chemistry is yet so new a science, what we know of it bears so small a proportion to what we are ignorant of, our knowledge in every department of it is so incomplete...
Seite 81 - Now know ye, that I, the said Richard Arkwright, do hereby describe and ascertain the nature of my said invention, and declare that the plan thereof drawn in the margin of these presents is composed of the following particulars, (that is to say) A, the cogg wheel and shaft, which receive their motion from a horse.
Seite 239 - H, which gathers up during the lime that L is passing outwards, and does not then move the cock, G, but that, when the part X, of the snail opposite O, that is to say, when the piston is about the top of its stroke, then the wheel, O, suddenly falls into the concavity of the snail; and the extremity of L, by its return, at once pushes...
Seite 170 - STONE": in which said Letters Patent there is contained a proviso obliging me, the said Joseph Aspdin, by an instrument in writing under my hand and seal, particularly to describe and ascertain the nature of my said invention, and in what manner the same is to be performed...
Seite 265 - ... appearance. The reguline zinc, vaporized by the heat, rises from the crucible as a metallic gas, and is, while in this state, converted to a calx. The flame which attends the process is a proof of it; for flame is a mass of vapour, ignited by the production of fire within itself. The fibrous form of the flowers of zinc, is owing to a crystallization of the calx while in mechanical suspension in the air, like that which takes place with camphor, when, after having been sometime inflamed, it is...
Seite 251 - ... that calamines were all of one species, and contained no carbonic acid, being a simple calx of zinc, attributing the effervescence which he found some of them to produce with acids, to an accidental admixture of carbonate of lime. The following experiments were made to obtain a more certain knowledge...
Seite 264 - ... him to eliminate from the essential elements of a compound those products of its analysis whose quantity cannot be reduced to any admissible proportion. " A certain knowledge of the exact proportions of the constituent principles of bodies, may likewise open to our view harmonious analogies between the constitutions of related objects, general laws, &c. , which at present totally escape us. In short, if it is founded in truth, its enabling the application of mathematics to chemistry cannot but...