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 15
... mixed with air , although not then sufficient for complete combustion . The hydrogen is first oxidized or burnt , and then the carbon is attacked by the air , although par- ticles of carbon are separated , and it is these , in a state ...
... mixed with air , although not then sufficient for complete combustion . The hydrogen is first oxidized or burnt , and then the carbon is attacked by the air , although par- ticles of carbon are separated , and it is these , in a state ...
Page 32
... mixing fluxes . As this mortar will not yield to abrasion , there is no danger of any foreign matter becoming mixed with the substance pulverized in it . It should be cleaned after use with pumice stone . Steel mortars are very useful ...
... mixing fluxes . As this mortar will not yield to abrasion , there is no danger of any foreign matter becoming mixed with the substance pulverized in it . It should be cleaned after use with pumice stone . Steel mortars are very useful ...
Page 34
... mixing substances with fluxes . THE REAGENTS . Those substances which possess the property of acting upon other substances , in such a characteristic manner that they can be recognized , either by their color , or by their effervescence ...
... mixing substances with fluxes . THE REAGENTS . Those substances which possess the property of acting upon other substances , in such a characteristic manner that they can be recognized , either by their color , or by their effervescence ...
Page 35
... mixing six parts of finely powdered heavy - spar ( BaO , SO3 ) with one part of char- coal and one and a half parts of wheat flour , and exposing this mixture in a Hessian crucible with a cover to a strong and continuous red heat . The ...
... mixing six parts of finely powdered heavy - spar ( BaO , SO3 ) with one part of char- coal and one and a half parts of wheat flour , and exposing this mixture in a Hessian crucible with a cover to a strong and continuous red heat . The ...
Page 40
... mixing two parts of finely powdered glance of cobalt with four parts of saltpetre , and one part of dry carbonate of potassa with one part of water free from carbonate of soda . This mixture should be added in suc- cessive portions into ...
... mixing two parts of finely powdered glance of cobalt with four parts of saltpetre , and one part of dry carbonate of potassa with one part of water free from carbonate of soda . This mixture should be added in suc- cessive portions into ...
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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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