Encyclopædia Britannica: Or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, 11. köide,2. osaColin Macfarquhar, George Gleig A. Bell and C. Macfarquhar, 1797 |
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Page 434
... filver - ores . It is fome- times enveloped in a thin ftony cruft . It is generally allayed with fome gold : but filver , like all the other metals , is much more frequently found mineralised by fulphur and by arsenic . Three principal ...
... filver - ores . It is fome- times enveloped in a thin ftony cruft . It is generally allayed with fome gold : but filver , like all the other metals , is much more frequently found mineralised by fulphur and by arsenic . Three principal ...
Page 442
... filver is deadened by too large an addition of lead , iron , tin , or lime , it lofes its oval form , and affumes a vermicular one if fhaken in a glass , or other veffel , without water , it adheres to the fides in threads , and is ...
... filver is deadened by too large an addition of lead , iron , tin , or lime , it lofes its oval form , and affumes a vermicular one if fhaken in a glass , or other veffel , without water , it adheres to the fides in threads , and is ...
Page 465
... filver then appears covered with a white fkin , which the finers call lightening , and the metal lightened or fined filver . The filver obtained by this procefs of fining is not yet altogether pure . It fill contains fome lead , fre ...
... filver then appears covered with a white fkin , which the finers call lightening , and the metal lightened or fined filver . The filver obtained by this procefs of fining is not yet altogether pure . It fill contains fome lead , fre ...
Common terms and phrases
alfo alſo animalcule antimony appear arfenic becauſe body brafs cafe calcination called caufe cauſe colour confequence confiderable confifts copper Cortes diftinct diſcovered diſtance divifions earth exiftence exiſtence extenfion faid fame fays fcrew fecond feems feen fenfation fenfe fent feparated feven feveral fhall fhould fide filver fimilar fimple fingle firft firſt fituation fize flider fmall folar folid fome fomething fometimes foon fore ftate ftill ftones fubftance fubject fuch fufficient fufion fulphur fuppofe furnace fyftem glafs himſelf ideas impoffible inches inftance inftrument iron itſelf kind laft lefs likewife litharge magnifier matter meaſure metals Mexicans Mexico micrometer microſcope mind moft Montezuma moſt motion muft muſt nature neceffary obferved object occafion paffing pelvis perceive perception perfon philofophers poffible pofition prefent purpoſe pyrites quantity reafon refemblance refpect reft ſmall ſome ſpace Spaniards thefe themſelves theſe thing thofe thoſe tion tube uſed uterus veffel