A System of Chemistry, Volume 1

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Bell & Bradfute; sold by J. Murray, London, 1810 - Chemistry
 

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Page 497 - sealed, and blown at one end into a hollow globe or bulb. The bulb and part of the tube are filled with mercury. When the bulb is plunged into a hot body, the mercury expands, and of course rises in the tube ; but when it is plunged into a cold body, the mercury contracts, and of
Page 506 - Thus was obtained the weight of a quantity of water equal to the bulk of the cylinder ; and this, corrected by the alteration of the bulk of the cylinder itself from heat or cold, gave the density of water at the temperatures tried. The result was, that the
Page 623 - are dissolved in water, the temperature sinks considerably ; and the fall is proportional to the rapidity of the solution. But when the same salts, previously deprived of their water by exposure to heat, are dissolved, the temperature of the mixture rises considerably. 3. It may be laid down as a rule to which there is no An
Page 52 - the same constituents as the gas from stagnant waters, excepting only a small portion of cy upon being set fire to ; and it occurred to him, that by confining and conducting it through tubes, it might be employed as an economical substitute for lamps and candles. The distillation was performed in iron
Page 513 - the act of freezing has been long known to philosophers. °*"* Glass bottles filled with water are commonly broken in pieces when the water freezes. The Florentine academicians burst a brass globe, whose cavity was an inch in diameter, by filling it with water and freezing it. The force necessary for this effect was calculated by Muschenbroeck at
Page 24 - with oxygen gas, it burns with such splendour that the eye can scarcely bear the glare of light, and at the same time produces a much greater heat than when burning in common air. It is well known that a candle put into a well-closed jar filled with common air
Page 403 - it as a subtle fluid filling space, and rendering bodies visible by the undulations into which it is thrown. According to his theory, when the sun rises it agitates this fluid, the undulations gradually extend themselves, and at last, striking against our eve, we see the sun. This opinion of
Page 273 - When lead is kept melted in an open vessel, its surface is soon covered with a grey coloured pellicle. "When this pellicle is removed, another succeeds it ; and by continuing the heat, the whole of the lead may soon be converted into this substance. If these pellicles be heated and agitated for a short time
Page 301 - and in the oldest manuscripts of the mathematical and astrological works of Julius Firmicus, the capital Z only is used, to which the last letter ( was afterwards added at the bottom, to render the abbreviation more distinct. • The supposed looking-glass of Venus is nothing else than the initial letter distorted a little of the word
Page 3 - can never be explored with any chance of success while we are ignorant of chemistry: and the vegetation of plants, and some of the most important functions of animals, have received all their illustration from the same source. No study can give us more exalted ideas of the wisdom and goodness of the Great First

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