Essays in Historical ChemistryMacmillan and Company, 1894 - 381 pages |
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Page 2
... possible , was a riddle which it has been left to our own age to solve . This movement was the effect of that vague and indefinable force we call the spirit of the age ; and the spirit of that age , as it has been laid bare to us by the ...
... possible , was a riddle which it has been left to our own age to solve . This movement was the effect of that vague and indefinable force we call the spirit of the age ; and the spirit of that age , as it has been laid bare to us by the ...
Page 7
... possible ; that is , can a space absolutely void of matter be obtained ? A few years before a very learned Frenchman , René Des Cartes , had asserted that , as according to his thinking , the universe was absolutely full , it was im- ...
... possible ; that is , can a space absolutely void of matter be obtained ? A few years before a very learned Frenchman , René Des Cartes , had asserted that , as according to his thinking , the universe was absolutely full , it was im- ...
Page 11
... possible , and , in fact , he cites that of Descartes , that the air is nothing but a heap of small flexible particles raised by the sun's heat " into that fluid and subtle and ethereal body which surrounds the earth ; and by the ...
... possible , and , in fact , he cites that of Descartes , that the air is nothing but a heap of small flexible particles raised by the sun's heat " into that fluid and subtle and ethereal body which surrounds the earth ; and by the ...
Page 12
... possible objection that the air thus strongly compressed by the superincumbent atmosphere should yet yield readily to the motion even of little flies and feathers , by demonstrating " that it is the equal pressure of the air on all ...
... possible objection that the air thus strongly compressed by the superincumbent atmosphere should yet yield readily to the motion even of little flies and feathers , by demonstrating " that it is the equal pressure of the air on all ...
Page 41
... possible to procure a perfect calx , no part of which should be sublimed and dispersed by the heat necessary to be made use of in the process , I should not doubt but that the quantity of inflam- mable air imbibed by it would ...
... possible to procure a perfect calx , no part of which should be sublimed and dispersed by the heat necessary to be made use of in the process , I should not doubt but that the quantity of inflam- mable air imbibed by it would ...
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Common terms and phrases
Academy alcohol ammonia amygdalin analogous Annalen appears atmosphere atomic volume atomic weights Berthelot Berzelius bodies boiling point Boyle calx carbonic acid Cavendish chemical chemists chlorine colloid combination common air composition compounds constitution contained cyanic acid Dalton Davy density dephlogisticated air determined diffusion discovery doctrine Dumas Dumas's elements equal ether existence experimental experiments fact Faraday Fermier-général FRIEDRICH WÖHLER gaseous gases generalisation Graham heat honour hydration hydrogen hypothesis inflammable inflammable air influence investigation known Kopp Kopp's laboratory labours Lavoisier Lavoisier's lectures Liebig liquid matter memoir Mendeleeff ment mercury metal method mixture mode molecular molecules nature nitric acid nitrogen observations obtained organic chemistry oxide oxygen palladium paper Philosophical phlogiston physical potassium Priestley Priestley's quantity radicle recognised REESE LIBRARY regarded relations remarkable Royal Society salts says Scheele scientific soluble solution specific gravity specific volume substances sulphate temperature theory tion tube values vapour whilst Wöhler
Popular passages
Page 235 - Jointly they establish with what we cannot but regard as a very high degree of probability the conclusion that, in any ordinary liquid, transparent solid, or seemingly opaque solid, the mean distance between the centres of contiguous molecules is less than the hundred-millionth, and greater than the two thousand-millionth of a centimetre.
Page 51 - ... it might not be so proper for us in the usual healthy state of the body: for as a candle burns out much faster in dephlogisticated than in common air, so we might, as may be said, live out too fast, and the animal powers be too soon exhausted in this pure kind of air. A moralist, at least, may say that the air which nature has provided for us is as good as we deserve.
Page 359 - Without entering into details, I will give the conclusions I then arrived at in the very words I used : — 1. The elements, if arranged according to their atomic weights, exhibit an evident periodicity of properties. 2. Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg, platinum, iridium, osmium) or which increase regularly (eg, potassium, rubidium, cesium).
Page 300 - So live, that when thy summons comes to join The innumerable caravan, which moves To that mysterious realm, where each shall take His chamber in the silent halls of death, Thou go not, like the quarry-slave at night, Scourged to his dungeon, but, sustained and soothed By an unfaltering trust, approach thy grave, Like one who wraps the drapery of his couch About him, and lies down to pleasant dreams.
Page 145 - My desire to escape from trade, which I thought vicious and selfish, and to enter into the service of Science, which I imagined made its pursuers amiable and liberal, induced me at last to take the bold and simple step of writing to Sir H. Davy...
Page 222 - It is conceivable that the various kinds of matter, now recognized as different elementary substances, may possess one and the same ultimate or atomic molecule existing in different conditions of movement. The essential unity of matter is an hypothesis in harmony with the equal action of gravity upon all bodies.
Page 235 - To form some conception of the degree of coarse-grainedness indicated by this conclusion, imagine a rain drop, or a globe of glass as large as a pea, to be magnified up to the size of the earth, each constituent molecule being magnified in the same proportion. The magnified structure would be coarser grained than a heap of small shot, but probably less coarse grained than a heap of cricketballs.
Page 51 - The feeling of it to my lungs was not sensibly different from that of common air, but I fancied that my breast felt peculiarly light and easy for some time afterwards. Who can tell but that in time this pure air may become a fashionable .article 1 Lee. cit. p. 94. in luxury ? Hitherto only two mice and myself have had the privilege of breathing it.
Page 127 - Cavendish from his capital experiment was, in his own words, that " dephlogisticated air is in reality nothing but dephlogisticated water, or water deprived of its phlogiston, or in other words, that water consists of dephlogisticated air united to phlogiston, and that inflammable air is either pure phlogiston, or else water united to phlogiston...
Page 113 - In this situation, I saw reason to embrace what is generally called the heterodox side of almost every question.