Essays in Historical ChemistryMacmillan and Company, 1894 - 381 pages |
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Page 47
... solution of Priestley's marine acid air in water . This discovery induced Priestley to try the same experi- ment with other acids , and , among them , with oil of vitriol . But he says , " I got no air from the oil of vitriol by any ...
... solution of Priestley's marine acid air in water . This discovery induced Priestley to try the same experi- ment with other acids , and , among them , with oil of vitriol . But he says , " I got no air from the oil of vitriol by any ...
Page 48
... its peculiar properties were due to a gas held in solution . Priestley treated the spirit of hartshorn as he had treated the spirit of salt , and he presently · found that a great quantity of a transparent and , 48 II Joseph Priestley.
... its peculiar properties were due to a gas held in solution . Priestley treated the spirit of hartshorn as he had treated the spirit of salt , and he presently · found that a great quantity of a transparent and , 48 II Joseph Priestley.
Page 58
... Academy an account of an inquiry into the nature of the so - called Globuli martiales , a pharmaceutical preparation made by boiling finely - divided The paper was , for iron with a solution of 58 III Carl Wilhelm Scheele.
... Academy an account of an inquiry into the nature of the so - called Globuli martiales , a pharmaceutical preparation made by boiling finely - divided The paper was , for iron with a solution of 58 III Carl Wilhelm Scheele.
Page 59
... solution in acids , and those only by solution in the diluted vitriolic acid , or spirit of salt . " Nor was Scheele more fortunate with his second contribu- tion- " Chemical Experiments with Sal - acetosella " [ acid potas- sium ...
... solution in acids , and those only by solution in the diluted vitriolic acid , or spirit of salt . " Nor was Scheele more fortunate with his second contribu- tion- " Chemical Experiments with Sal - acetosella " [ acid potas- sium ...
Page 66
... solution of cast iron in mineral acids is essentially the same substance . He ascer- tained the chemical nature of sulphuretted hydrogen , dis- covered arsenetted hydrogen , and the green arsenical pigment which is associated with his ...
... solution of cast iron in mineral acids is essentially the same substance . He ascer- tained the chemical nature of sulphuretted hydrogen , dis- covered arsenetted hydrogen , and the green arsenical pigment which is associated with his ...
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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.