A Practical Essay on the Analysis of Minerals,: Exemplifying the Best Methods of Analysing Ores, Earths, Stones, Inflammable Fossils, and Mineral Substances in GeneralKimber & Conrad, no. 93, Market Street, and Benjamin & Thomas Kite, no. 20, North Third Street. 1809. Brown & Merritt, printers., 1809 - 236 Seiten |
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Häufige Begriffe und Wortgruppen
acetous acid affuse alkaline alloyed alumine ammonia ANALYSIS OF EARTHS antimony arsenic ascertain the quantity barytes bismuth boil calcareous called carbonate of potash carbonic acid chemical coal cobalt collect the precipitate colour combined contained copper crucible decant Decompose diluted nitric acid dissolved distilled dried drop dry mass EARTHS AND STONES examined expose filter flask Florence flask fluid following manner fused genus glass glucine gold grains ignited immerse insoluble residue INSTRUMENTS OF ANALYSIS last process lead lime liquid ammonia magnesia manganese mercury Mingle mixture molybdena muriatic acid muriatic solution nitrate nitric acid nitric solution nitro-muriatic acid obtained oxyd oxyd of iron platina portion of acid precipitate ensues quan quantity of sulphur quantity of water re-dissolved red heat retort saline salt separated silex silicious silver soluble solution of carbonate specific gravity strontia sulphate Sulphuret sulphuric acid tellurium tion tity vessel wash weight white precipitate yttria zinc
Beliebte Passagen
Seite 184 - ... acid, diluted with five or six times its weight of water; and such as are not soluble in that acid.
Seite 231 - This position we presume will be granted. Mr. Accum then observes ' a greater cause more proportioned to the magnitude of the effect is required ; and we find it only in that prodigious quantity of vegetables which grow in the sea, and is increased by the immense mass of those which are carried down by rivers.
Seite 208 - Its retentive power is 82,25 ; hence, I fhould judge it to be unfertile in this climate, unlefs fituated on a declivity with an unimpeded fall ; it may be called a clayey loam. Mr. Young difcovered a remarkable circumftance attendant on fertile foils : he found that equal weights of different foils, being dried and reduced to powder, afforded quantities of air, by diftillation, fomewhat correfponding to the ratios of their values. This air was a mixture of fixed and inflammable airs...
Seite 202 - I {hall fuppofe it to amount to 12 grs. and denote it by C. 7°- The filtred water, No. IV. is next to be gently evaporated to nearly one pint, and then fuffered to reft for three days in a cool place, that it may...
Seite 40 - ... cooled. This inconvenience may be on many occasions avoided, by using a double crucible, and filling up the interstice with sand, or by covering the crucible with a lute of clay and sand, by which means the heat is transmitted more gradually and equally. Those which ring clearly when struck, and are of an uniform thickness, and have a reddish brown colour, without black spots, are reckoned the best. Wedgewood's crucibles are made of clay mixed with baked clay finely pounded, and are in every...
Seite 151 - ... p. 318. Surely the hardest hearted stoic will not refuse them this; especially when their cause is so eloquently pleaded as m the following sentences : ' In their proceedings we behold the efforts of genius tormented with the desire of acquiring knowledge, and irritated at the prospect of the scanty means which nature has put in its power. They have endeavoured to embellish their hypotheses with every ornament which imagination and eloquence can furnish, either as instruments of illusion or entertainment...
Seite 30 - ... operated on to fall to the bottom between each stroke of the pestle, nor so perpendicular as to collect it too much together, and to retard the operation. The materials of which the...
Seite 208 - Of value of from 5 to izs. produced 28 oz. 12 — 20 42 above 20 66 This appears to be a good method of eftimating the proportion of coaly matter in foils that are in full heart; that is, not exhaufted, and freed from roots, &c. Another mark of the goodnefs of a foil is the length of the roots of wheat growing in it ; for thefe are...
Seite 201 - ... their weight of warm diftilled water on them, and let them ftand twentyfour hours, or longer, that is, until the water has acquired a colour ; then pour it off, and add more water, as long as it changes colour ; afterwards filter the coloured water, and evaporate It to a pint, or half a pint ; fet it in a cool place for three days; then take out the faline matter, if any be found, and fet it by. 6.
Seite 204 - ... be freed from all contamination of the vitriolic acid;) the next day the flafk with its contents being again weighed, the difference between the weights of the ingredients and the weights now found, will exprefs the quantity of air that efcaped during the folution.