The Chemist: A Monthly Journal of Chemical Philosophy, Volume 11850 |
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Pagina 2
... sufficient to dissolve them in a small quantity of water , then to precipitate it again by means of alcohol of 0.85 or 0.90 ; the supernatant liquor removes from the solution the sub- stance sought . All the alcoholic solutions were ...
... sufficient to dissolve them in a small quantity of water , then to precipitate it again by means of alcohol of 0.85 or 0.90 ; the supernatant liquor removes from the solution the sub- stance sought . All the alcoholic solutions were ...
Pagina 4
... 194 ° F. This liquid , on which floated minute quantities of concrete essence , exhaled an agreeable aromatic odor , resembling that of coffee itself , but so intense that a few drops of this water were sufficient 4 CHEMISTRY .
... 194 ° F. This liquid , on which floated minute quantities of concrete essence , exhaled an agreeable aromatic odor , resembling that of coffee itself , but so intense that a few drops of this water were sufficient 4 CHEMISTRY .
Pagina 5
... sufficient to communicate to a cupful of milk or any inodorous liquid , the agreeable aroma of coffee . The particles of concrete essence were not the source of this aroma ; for , isolated and washed , they did not appear to retain any ...
... sufficient to communicate to a cupful of milk or any inodorous liquid , the agreeable aroma of coffee . The particles of concrete essence were not the source of this aroma ; for , isolated and washed , they did not appear to retain any ...
Pagina 11
... sufficient for me to calculate them . In the first operation I operated on only 560 gr . , in the second , on 352 ; the mean of these two operations gave the following results : - Oxide of Iron obtained by the magnet 59.82 Titaniferous ...
... sufficient for me to calculate them . In the first operation I operated on only 560 gr . , in the second , on 352 ; the mean of these two operations gave the following results : - Oxide of Iron obtained by the magnet 59.82 Titaniferous ...
Pagina 13
... sufficient quantity of lime water . The lime must be quite fresh , and the water must be filtered . It may be poured into bottles , which must be perfectly fitted and corked immediately . After having done this , one or two quarts of ...
... sufficient quantity of lime water . The lime must be quite fresh , and the water must be filtered . It may be poured into bottles , which must be perfectly fitted and corked immediately . After having done this , one or two quarts of ...
Overige edities - Alles bekijken
Veelvoorkomende woorden en zinsdelen
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 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 plants 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
Populaire passages
Pagina 356 - ... view of this vast collection will produce upon the spectator will be that of deep thankfulness to the Almighty for the blessings which he has bestowed upon us already here below, and the second, the conviction that they can only be realized in proportion to the help which we are prepared to render to each other, therefore only by peace, love and ready assistance not only between individuals but between the Nations of the Earth.
Pagina 356 - The products of all quarters of the globe are placed at our disposal, and we have only to choose which is the best and the cheapest for our purposes, and the powers of production are entrusted to the stimulus of competition and capital.
Pagina 77 - ... put the mucky liquid to stand, so that they may, after it has rested for a day or two, skim the fluid from the solid particles of filth, pollution, and disease.
Pagina 347 - ... and liberates the oxygen in its gaseous state to sustain the healthy functions of the animal life, at the same time that it feeds on the rejected matter which has fulfilled its purposes in the nourishment of the fish and snail, and preserves the water constantly in a clean and healthy condition.
Pagina 321 - When one pound of lean beef, free of fat, and separated from the bones, in the finely chopped state in which it is used for beef sausages or mincemeat, is uniformly mixed with its own weight of cold water, slowly heated to boiling, and the...
Pagina 356 - ... 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.
Pagina 356 - 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...
Pagina 356 - Whilst formerly the greatest mental energies strove at universal knowledge, and that knowledge was confined to the few, now they are directed on specialities, and in these, again, even to the minutest points...
Pagina 204 - 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.
Pagina 71 - ... 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...