the chemist; a monthly journal of chemical philosophy and of chemistry applied to the arts, manufactures, agriculture, and medicine, and record of pharmacy. |
Részletek a könyvből
1 - 5 találat összesen 100 találatból.
2. oldal
... dried in vacuo at 230 ° F. * PROPERTIES AND COMPOSITION OF THE CRYSTALLINE SUBSTANCES OF COFFEE . The properties manifested by certain re- actions on this substance could not be com- prehended without first knowing its com- position ...
... dried in vacuo at 230 ° F. * PROPERTIES AND COMPOSITION OF THE CRYSTALLINE SUBSTANCES OF COFFEE . The properties manifested by certain re- actions on this substance could not be com- prehended without first knowing its com- position ...
7. oldal
john and charles watt. chemists employ for preparing ammonia . Perfectly dried hydrochlorate of methyla- mine is mixed with twice its weight of quick lime , and the mixture is introduced into a long tube , closed at one end , so as to ...
john and charles watt. chemists employ for preparing ammonia . Perfectly dried hydrochlorate of methyla- mine is mixed with twice its weight of quick lime , and the mixture is introduced into a long tube , closed at one end , so as to ...
14. oldal
... dried , after which it is weighed , and the weight is noted , the tare of the filter being deducted . In this operation the lime dissolved in the water combines with the carbonic acid gas , producing insoluble carbonate of lime . This ...
... dried , after which it is weighed , and the weight is noted , the tare of the filter being deducted . In this operation the lime dissolved in the water combines with the carbonic acid gas , producing insoluble carbonate of lime . This ...
15. oldal
... dried over sulphuric acid , and dissolved in bydrochloric acid ; the copper was separated by means of sulphuretted hy- drogen , and weighed in the manner usually adopted for calcined oxide of copper . The liquid filtered from the ...
... dried over sulphuric acid , and dissolved in bydrochloric acid ; the copper was separated by means of sulphuretted hy- drogen , and weighed in the manner usually adopted for calcined oxide of copper . The liquid filtered from the ...
19. oldal
... dried between folds of bibulous paper . Large crystals may be obtained by re - dis- solving in a little boiling absolute alcohol , and setting apart to cool . That which does not crystallise by cooling is lost , being converted , by ...
... dried between folds of bibulous paper . Large crystals may be obtained by re - dis- solving in a little boiling absolute alcohol , and setting apart to cool . That which does not crystallise by cooling is lost , being converted , by ...
Gyakori szavak és kifejezések
acetic action albumen alcohol alkaline alloy alumina ammonia analysis animal appears baryta battery bodies boiling carbonate of lime carbonic acid cent charcoal chemical chemists chloric acid chloride chloride of sodium chloroform 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 manganese manufacture manure means ment metallic mineral mixed mixture nitrate nitric acid nitrogen obtained odor operation oxide oxide of iron oxygen phosphate phosphoric 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
Népszerű szakaszok
354. oldal - 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.
354. oldal - 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.
319. oldal - ... now become hard and horny, we obtain an equal weight of the most aromatic soup, of such strength as cannot be obtained, even by boiling for hours, from a piece of flesh. When mixed with salt and the other usual additions, by which soup is usually seasoned, and tinged somewhat darker by means of roasted onions or burnt sugar, it forms the very best soup which can in any way be obtained from 1 Ib. of flesh.
380. oldal - CYCLOPEDIA OF AGRICULTURE, PRACTICAL AND SCIENTIFIC; in which the Theory, the Art, and the Business of Farming, m all their departments, are thoroughly and practically treated.
75. 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.
345. 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.
202. 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.
354. 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.
354. 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...
354. 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...