Encyclop¿dia 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 428
... also with feveral heteroge- neous fubftances , which fo alter and disguise their qua- lities , that in this ftate they cannot ferve for any of the purposes for which they are proper when they are suf- ficiently pure . Ores confift , 1 ...
... also with feveral heteroge- neous fubftances , which fo alter and disguise their qua- lities , that in this ftate they cannot ferve for any of the purposes for which they are proper when they are suf- ficiently pure . Ores confift , 1 ...
Page 430
... also contain fome copper and much arfenic . Hence then we see , that arsenic is the cause of white- ness in pyrites , and is contained in every pyrites of that colour ; that copper is the principal cause of the yellow colour of pyrites ...
... also contain fome copper and much arfenic . Hence then we see , that arsenic is the cause of white- ness in pyrites , and is contained in every pyrites of that colour ; that copper is the principal cause of the yellow colour of pyrites ...
Page 441
... also a mark of fufficient calcination when antimonial and fulphureous ores no longer fend out a disagreeable smoke ; if the thick and black smoke of bituminous ores become white ; and if the filver in the stuff appears in white ...
... also a mark of fufficient calcination when antimonial and fulphureous ores no longer fend out a disagreeable smoke ; if the thick and black smoke of bituminous ores become white ; and if the filver in the stuff appears in white ...
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