The Chemist: A Monthly Journal of Chemical and Physical Science..., 1. köide1850 |
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Page 4
... tion and formula of chloroginic acid and of the chloroginates ; but the following facts will remain demonstrated , independently of any further verification : - 1. A portion only of caffeine is in the free state in coffee ; it may be ...
... tion and formula of chloroginic acid and of the chloroginates ; but the following facts will remain demonstrated , independently of any further verification : - 1. A portion only of caffeine is in the free state in coffee ; it may be ...
Page 10
... tion , the gold forms veinules with a quartzy gangue . The schistous fragments which exist in the alluvion of the Valley of Sacramento , lead us to imagine that the mountains which contain the . auriferous veins are rather micaceous ...
... tion , the gold forms veinules with a quartzy gangue . The schistous fragments which exist in the alluvion of the Valley of Sacramento , lead us to imagine that the mountains which contain the . auriferous veins are rather micaceous ...
Page 15
... tion of chlorine . The chlorine seizes the was separated by means of sulphuretted hy - metal combined with the iodine or bromine , drogen , and weighed in the manner usually adopted for calcined oxide of copper . The liquid filtered ...
... tion of chlorine . The chlorine seizes the was separated by means of sulphuretted hy - metal combined with the iodine or bromine , drogen , and weighed in the manner usually adopted for calcined oxide of copper . The liquid filtered ...
Page 27
... tion that only 0010 grammes of oxide of iron was added . The plant was developed in a remarkable manner . Leaves green without dry spots ; stem normal , and 24 inches long ; joints rather weak ; five flowers , but no fruits . Weight of ...
... tion that only 0010 grammes of oxide of iron was added . The plant was developed in a remarkable manner . Leaves green without dry spots ; stem normal , and 24 inches long ; joints rather weak ; five flowers , but no fruits . Weight of ...
Page 34
... tion in London . Be it so . I ask , is it the most healthy place that can be found out of it ? and there , alone , should a hospital , espe- cially for such a complaint as tubercular phthysis , be erected ? I greatly fear that -11 who ...
... tion in London . Be it so . I ask , is it the most healthy place that can be found out of it ? and there , alone , should a hospital , espe- cially for such a complaint as tubercular phthysis , be erected ? I greatly fear that -11 who ...
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Common terms and phrases
acetate action albumen alcohol alkali alloy alumina ammonia analysis animal appears baryta battery bodies boiling carbonate of lime carbonic acid cent charcoal chemical chemists chloride chloride of sodium chloroform chromic acid color combination composition compound contained copper crystallised crystals decomposed decomposition dilute disengagement dissolved distilled dried effects eggs electricity employed ether evaporation experiments extract fatty matter filtered fused give glass gold grammes heat humus hydrochloric acid hydrogen insoluble iodine liquid liquor magnesia manufacture manure means ment metallic mineral mixed mixture nitrate nitric acid nitrogen obtained odor operation oxide oxide of iron oxygen phosphate phosphoric acid plant platinum portion potassa potassium precipitate prepared present produced proportion quinquina residue salt santonine silica silver small quantity soda soluble solution starch substances sugar sulphate sulphuret sulphuric acid surface tained temperature tion tube vegetable vessel washed whilst yellow zinc
Popular passages
Page 352 - THE EXHIBITION of 1851 is to give us a true test and a living picture of the point of development at which the whole of mankind has arrived in this great task, and a new starting point from which all nations will be able to direct their further exertions.
Page 352 - So man is approaching a more complete fulfilment of that great and sacred mission which he has to perform in this world. His reason being created after the image of God, he has to use it to discover the laws by which the Almighty governs His creation, and, by making these laws his standard of action, to conquer nature to his use ; himself a divine instrument.
Page 352 - ... we are living at a period of most wonderful transition, which tends rapidly to the accomplishment of that great end to which, indeed, all history points — the realization of the unity of mankind. Not a unity which breaks down the limits, and levels the peculiar characteristics of the different nations of the earth, but rather a unity the result and product of those very national...
Page 352 - Not a unity which breaks down the limits, and levels the peculiar characteristics of the different nations of the earth, but rather a unity the result and product of those very national varieties and antagonistic qualities. The distances which separated the different nations and parts of the globe are...
Page 87 - OF CHEMISTRY ; Including the most Recent Discoveries and Applications of the Science to Medicine and Pharmacy, and to the Arts. By ROBERT KANE, MDMRIA, Professor of Natural Philosophy to the Royal Dublin Society.
Page 200 - It was further shown that chemical decompositions may be produced by liquid diffusion ; the constituents of a double salt of so much stability as common alum being separated, and the sulphate of potash diffusing in the largest proportion. In fact the diffusive force is one of great energy, and quite as capable of breaking up compounds as the unequal volatility of their constituents.
Page 67 - ... at a high temperature, and recasting several times to give a great many tints, varying from blue to pink, red, opaque yellow, and green. Charcoal in excess in a mixture of silica-alkaline glass gives a yellow colour, which is not so bright as the yellow from silver, — and this yellow colour may be turned to a dark red by a second fire. The author is disposed to refer these chromatic changes to some modifications of the composing particles rather than to any chemical changes in the materials...
Page 418 - It is now to be once more drawn off, and in a dry stoppered bottle mixed with a little powdered peroxide of manganese, with which it is gently agitated, and left in contact until the odour of sulphurous acid is entirely...
Page 201 - ... as 2 to 3. Hydrate of potash and sulphate of magnesia were less fully examined, but the first presented sensibly double the diffusibility of sulphate of potash, and four times the diffusibility of the sulphate of magnesia. If these times are all squared, the following remarkable ratios are obtained for the densities of the...
Page 137 - The magnetic needle was then forced back, by pins applied upon opposite sides of its two extremities, to its natural position when uninfluenced by a current ; after which, contact being broken at G or E, it was deflected strongly in the opposite direction ; thus showing, in accordance with the chemical effects...