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 10
... infusible . It is a convenient classification to arrange substances into those which are fusible with difficulty , and those which are easily fusible . Very often we resort to fusion for the purpose of decomposing a substance , or to ...
... infusible . It is a convenient classification to arrange substances into those which are fusible with difficulty , and those which are easily fusible . Very often we resort to fusion for the purpose of decomposing a substance , or to ...
Page 21
... infusible . oxide . COMBUSTION . - Any flame of sufficient size can be used for blowpipe operations . It may be either the flame of a candle of tallow or wax , or the flame of a lamp . The flame of a wax candle , or of an oil lamp is ...
... infusible . oxide . COMBUSTION . - Any flame of sufficient size can be used for blowpipe operations . It may be either the flame of a candle of tallow or wax , or the flame of a lamp . The flame of a wax candle , or of an oil lamp is ...
Page 24
... infusible , and being a poor conductor of heat , a substance can be exposed to a higher degree of heat upon it than upon any other substance . 2. It is very porous , and therefore allows easily fusible sub- stances ( such as alkalies ...
... infusible , and being a poor conductor of heat , a substance can be exposed to a higher degree of heat upon it than upon any other substance . 2. It is very porous , and therefore allows easily fusible sub- stances ( such as alkalies ...
Page 26
... infusible in the blowpipe flame , and is such a poor conductor of heat that a strip of it may be held close to that portion of it which is red hot without the least inconvenience to the fingers . It is necessary that the student should ...
... infusible in the blowpipe flame , and is such a poor conductor of heat that a strip of it may be held close to that portion of it which is red hot without the least inconvenience to the fingers . It is necessary that the student should ...
Page 40
... use . The oxide of cobalt combines , with strong heat in the oxidation flame , with various earths and infusible metallic oxides , and thus produces peculiarly colored compounds , and 40 THE BLOW PIPE . Nitrate of Cobalt,
... use . The oxide of cobalt combines , with strong heat in the oxidation flame , with various earths and infusible metallic oxides , and thus produces peculiarly colored compounds , and 40 THE BLOW PIPE . Nitrate of Cobalt,
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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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