A Manual of Practical AssayingLongmans, Green, and Company, 1868 - 697 páginas |
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Página 29
... half - way round , so as to make that which before pointed to the right now point to the left . The beam should then again be made to oscillate , and if it perform regularly as before , finally resting in a horizontal position , it has ...
... half - way round , so as to make that which before pointed to the right now point to the left . The beam should then again be made to oscillate , and if it perform regularly as before , finally resting in a horizontal position , it has ...
Página 32
... half of th of a grain will be pressing on that side of the balance , or , in other words , 05th of a grain ; and when the rider is at the marks 1 , 2 , 3 , 4 , respectively , 01 , 02 , ∙ 03 , · 04 of a grain will be indicated . With a ...
... half of th of a grain will be pressing on that side of the balance , or , in other words , 05th of a grain ; and when the rider is at the marks 1 , 2 , 3 , 4 , respectively , 01 , 02 , ∙ 03 , · 04 of a grain will be indicated . With a ...
Página 45
... half an inch ; or a large watch - glass or dial - plate turned concave side upwards may be used as a cover . Both the funnel and dial - plate serve the double object of keeping out dust , and preventing loss of the liquid by projection ...
... half an inch ; or a large watch - glass or dial - plate turned concave side upwards may be used as a cover . Both the funnel and dial - plate serve the double object of keeping out dust , and preventing loss of the liquid by projection ...
Página 58
... half inches external diameter at the top had the lower part cut off , so to as leave an aperture of five inches . This , when put into the larger part , rested upon its lower external edge , the tops of the two being level . The ...
... half inches external diameter at the top had the lower part cut off , so to as leave an aperture of five inches . This , when put into the larger part , rested upon its lower external edge , the tops of the two being level . The ...
Página 71
... half that just stated , if a good solid foundation of fuel be made , and the crucible placed on that , and well surrounded by coke , constantly kept close to the pot and the sides of the furnace : in this manner the cooling effect of ...
... half that just stated , if a good solid foundation of fuel be made , and the crucible placed on that , and well surrounded by coke , constantly kept close to the pot and the sides of the furnace : in this manner the cooling effect of ...
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Términos y frases comunes
added alloy ammonia amount antimony aqua regia arsenic ascertained assay bismuth black flux blowpipe boiling borax button calcined carats carbonate of soda carbonic acid cent charcoal chloride of silver clay cobalt colour combustion containing cooling copper Crown 8vo crucible cubic cubic centimetres cupel decomposed dilute dissolved Edition employed excess filter flame flask fluid fuel furnace fused fusible fusion gives glass globule gold grains grammes heat hydrochloric acid ignited inches iron lime liquid litharge manganese matter melted mercury metal method mineral mixed mixture muffle nickel nitrate nitric acid normal solution obtained operation Ounce oxide oxide of lead oxidising oxygen permanganate peroxide pipette placed plate platinum potash potassium powder precipitate produced proportion protoxide pulverised pure readily reduced roasting salt silica slag small quantity sodium specific gravity substance sulphate of lead sulphide sulphuric acid temperature thousandths tion tube vessel washed weight Woodcuts zinc
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