The Chemist: A Monthly Journal of Chemical Philosophy, 1. kötet1850 |
Részletek a könyvből
1 - 5 találat összesen 76 találatból.
7. oldal
... gold is precipitated of a brownish yellow ; an excess of re - agent readily re - dissolves the precipitate , forming a liquid of an orange - red color . A concentrated solution of chloride of platinum gives , with methylamine , a de ...
... gold is precipitated of a brownish yellow ; an excess of re - agent readily re - dissolves the precipitate , forming a liquid of an orange - red color . A concentrated solution of chloride of platinum gives , with methylamine , a de ...
9. oldal
... gold workings in Califor- nia ; a portion of this collection has been sent to the Ecole des Mines , and I have had an op- portunity of examining it : it comprises * Buchner's Repertorium . + Comptes Rendus , No. 8 , Aug. 20 , 1849 . of ...
... gold workings in Califor- nia ; a portion of this collection has been sent to the Ecole des Mines , and I have had an op- portunity of examining it : it comprises * Buchner's Repertorium . + Comptes Rendus , No. 8 , Aug. 20 , 1849 . of ...
10. oldal
... gold are distinctly visible . 3rd . Pieces of quartz and fragments of rocks collected in the alluvion which con- stitutes this valley . 4th . Two pieces of native gold . 5th . Lastly , bracteæ of gold from three different parts of the ...
... gold are distinctly visible . 3rd . Pieces of quartz and fragments of rocks collected in the alluvion which con- stitutes this valley . 4th . Two pieces of native gold . 5th . Lastly , bracteæ of gold from three different parts of the ...
11. oldal
... Gold * 16.32 The difference which exists in the size and form of the grains , and that presented by the specific gravity of each of the elements of which the auriferous sands of California are composed , should cause these proportions ...
... Gold * 16.32 The difference which exists in the size and form of the grains , and that presented by the specific gravity of each of the elements of which the auriferous sands of California are composed , should cause these proportions ...
12. oldal
... gold 4.65 100.00 Among the crystals of titaniferous oxide of iron and specular iron , a certain number have preserved easily appreciable forms . They have , in general , much lustre : the crystals of zircon , for the most part very ...
... gold 4.65 100.00 Among the crystals of titaniferous oxide of iron and specular iron , a certain number have preserved easily appreciable forms . They have , in general , much lustre : the crystals of zircon , for the most part very ...
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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
Népszerű szakaszok
356. oldal - ... 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.
356. oldal - 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.
77. oldal - ... 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.
347. oldal - ... 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.
321. oldal - 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...
356. oldal - ... 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.
356. oldal - 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...
356. oldal - 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...
204. oldal - 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.
71. oldal - ... 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...