Encyclopædia Britannica: Or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, 4. köide,2. osaColin Macfarquhar, George Gleig A. Bell and C. Macfarquhar, 1797 |
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Page 440
... used from the earlieft ages of chemi- ftry for this purpose . The requifite qualities are , 1 . A confiderable degree of toughnefs when mixed with water . 2. A great degree of hardnefs when burnt in the fire with a violent degree of ...
... used from the earlieft ages of chemi- ftry for this purpose . The requifite qualities are , 1 . A confiderable degree of toughnefs when mixed with water . 2. A great degree of hardnefs when burnt in the fire with a violent degree of ...
Page 443
... used for feparating earths and metals from the acids which had kept them fufpended . When a precipitation is made of the more valuable metals , glafs veffels are to be used . When earths , or the imperfect metallic fubftances , are to ...
... used for feparating earths and metals from the acids which had kept them fufpended . When a precipitation is made of the more valuable metals , glafs veffels are to be used . When earths , or the imperfect metallic fubftances , are to ...
Page 730
... used to put faccharum fa- turni into his water to increase its refractive power , the lead , even in this form , might increafe the diffi- pative refraction , as it does in the compofition of glafs ; and if fo , that this would account ...
... used to put faccharum fa- turni into his water to increase its refractive power , the lead , even in this form , might increafe the diffi- pative refraction , as it does in the compofition of glafs ; and if fo , that this would account ...
Common terms and phrases
acetous acid alfo alum antimony aqua regia arfenic bifmuth boiling borax cafe calcined calx caufe cauftic Chineſe cobalt colour confiderable confiftence contained copper crucible cryftals decompofed dephlogifticated diffolved diftillation digeftion drachms eafily earth effervefcence evaporated expofed fal ammoniac faline falt fame faturated feems feparated fhould filk filver fimilar fire firft fixed air fixed alkali fmall fmell foluble folution fome fometimes foon fpecific gravity fpirit of wine ftate ftill ftrong fubftance fublimate fuch fufficient fufion fugar fulphur fuppofed furface glafs gold grains heat inflammable iron itſelf laft lefs likewife liquor mafs manganefe marine acid matter melted mercury metal mineral alkali mixed mixture moft moſt neceffary nitre nitrous acid obferved obtained oil of vitriol ounces phlogifton platina powder precipitate procefs pure purpoſe quantity quicklime reafon refiduum regulus retort ſmall tartar thefe theſe thofe thoſe tion uſed vapours veffel vitriolic acid volatile alkali yellow zinc