A Manual of Practical AssayingLongmans, Green, and Company, 1868 - 697 páginas |
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Página xxix
... globules obtained on cupellation , 585 . The scale for this purpose , 587. Table showing the weight of globules of different diameters , 588. Cupellation loss , 589. Table showing the respective amount , 591 . Classification of ...
... globules obtained on cupellation , 585 . The scale for this purpose , 587. Table showing the weight of globules of different diameters , 588. Cupellation loss , 589. Table showing the respective amount , 591 . Classification of ...
Página 120
... globules produced in an assay may not be retained by the asperities of the lining , but may be readily enabled to unite into one button . When a lined charcoal pot is well made , its sides are very smooth and shining . For ordinary use ...
... globules produced in an assay may not be retained by the asperities of the lining , but may be readily enabled to unite into one button . When a lined charcoal pot is well made , its sides are very smooth and shining . For ordinary use ...
Página 130
... globules of metal to enter into their pores . When , on the contrary , the powder is very fine , the paste moist , and compressed strongly , the cupels have much solidity , and are less porous ; the fine metal cannot pene- trate them ...
... globules of metal to enter into their pores . When , on the contrary , the powder is very fine , the paste moist , and compressed strongly , the cupels have much solidity , and are less porous ; the fine metal cannot pene- trate them ...
Página 163
... globules of lead at the lower part . The second mixture gave 26 parts of lead , and a semi- iused slag , compact and opaque , the colour yellowish - grey . It contained : Oxide of lead Protoxide of tin 52 . 11.4 The third mixture ...
... globules of lead at the lower part . The second mixture gave 26 parts of lead , and a semi- iused slag , compact and opaque , the colour yellowish - grey . It contained : Oxide of lead Protoxide of tin 52 . 11.4 The third mixture ...
Página 164
... globules of lead were present . The slag con- tained about : Oxide of lead Oxide of iron .55.9 13 : 4 The second mixture gave a button of lead , weighing 46 · 6 , and a very fluid , compact , opaque slag , with an unequal shining lustre ...
... globules of lead were present . The slag con- tained about : Oxide of lead Oxide of iron .55.9 13 : 4 The second mixture gave a button of lead , weighing 46 · 6 , and a very fluid , compact , opaque slag , with an unequal shining lustre ...
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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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