A System of Instruction in the Practical Use of the Blowpipe: Being a Graduated Course of Analysis for the Use of Students, and All Those Engaged in the Examination of Metallic Combinations |
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Page 35
... crystals . " These crystals must be washed with a little cold water , and then heated at a low temperature in a porcelain dish until the crystal water is expelled . The hydrate of baryta melts by a low red heat without losing its water ...
... crystals . " These crystals must be washed with a little cold water , and then heated at a low temperature in a porcelain dish until the crystal water is expelled . The hydrate of baryta melts by a low red heat without losing its water ...
Page 37
... crystals . Place these crystals upon a filter , and wash them with a little cold water , until a solution of nitrate of silver ceases to exhibit any reaction upon the filtrate . These crystals must be dried and powdered . Saltpetre ...
... crystals . Place these crystals upon a filter , and wash them with a little cold water , until a solution of nitrate of silver ceases to exhibit any reaction upon the filtrate . These crystals must be dried and powdered . Saltpetre ...
Page 38
... crystals are washed upon a filter , dried , and heated , to expel the crystal water , or until the mass ceases to swell up , and it is reduced to powder . Boracic acid is incombustible , and has a strong affinity for oxides when fused ...
... crystals are washed upon a filter , dried , and heated , to expel the crystal water , or until the mass ceases to swell up , and it is reduced to powder . Boracic acid is incombustible , and has a strong affinity for oxides when fused ...
Page 39
... crystals must be dissolved in as little boiling water as possible , and re - crystallized . These crystals must be dried and powdered . When this double salt is heated , the water and the ammonia escape , while the incombustible residue ...
... crystals must be dissolved in as little boiling water as possible , and re - crystallized . These crystals must be dried and powdered . When this double salt is heated , the water and the ammonia escape , while the incombustible residue ...
Page 45
... crystals . of nitre , and more or less oxamide . The strongly - colored mother liquid is then neutralized with carbonate of potash or soda , according to the salt to be prepared , and the solution is boiled , whereupon it generally ...
... crystals . of nitre , and more or less oxamide . The strongly - colored mother liquid is then neutralized with carbonate of potash or soda , according to the salt to be prepared , and the solution is boiled , whereupon it generally ...
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Common terms and phrases
alkali alumina antimony arsenic assay baryta Behavior Mineral bismuth blowpipe blowpipe flame blue color borax cadmium carb carbonate of soda ceding Cerium char charcoal Chemistry Chimie chloride clear bead coal cobalt cold colorless colors the flame compounds cooling copper crystals dark edit exposed external flame flame blue flame of oxidation flame of reduction forceps Fuses fusible glass tube glass-bulb green color grey hydrate hydrochloric acid ignition incrusts the charcoal infusible insoluble intumescence iron lead lime lithia litmus paper London magnesia manganese mass melts metallic oxides microcosmic salt moistened nickel Niobic nitric acid opaque open tube outer flame oxidation flame oxygen Paris platinum platinum wire potash potassa powder present produce protoxide reac red color red heat reduced reduction flame sesquioxide silicates silver soluble Special reactions strontia sublimate substance sulphate sulphide sulphuric acid Telluric Acid tellurium tion Titanic Acid vapor violet violet color volatilized vols yellow color
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Page 16 - The operation depends upon a little artifice in blowing through the pipe, which is in reality more difficult to describe than to acquire. " The effect intended to be produced is a continual stream of air for many minutes, if necessary, without ceasing. This is done by applying the tongue to the roof of the mouth, so as to interrupt the communication between the mouth and the passage of the nostrils ; by which means the operator is at liberty to breathe through the nostrils, at the same time that...
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