Journal of Natural Philosophy, Chemistry and the Arts, Band 2G. G. and J. Robinson, 1799 |
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Seite viii
... falls to pieces in the fire by a low red heat , and confequently is unfit for gold - workers . Various experiments chemical and mechanical . Fine gold alloyed with tin has the same defect . It arifes from the great fufibility of the tin ...
... falls to pieces in the fire by a low red heat , and confequently is unfit for gold - workers . Various experiments chemical and mechanical . Fine gold alloyed with tin has the same defect . It arifes from the great fufibility of the tin ...
Seite ix
... falls down by abforption of carbonic acid from the atmosphere , or by the defigned addition of a portion of pure water impregnated with that principle . The depuration of water by barytes promises to be of great utility in the art of ...
... falls down by abforption of carbonic acid from the atmosphere , or by the defigned addition of a portion of pure water impregnated with that principle . The depuration of water by barytes promises to be of great utility in the art of ...
Seite xv
... falls down ; the reft is diffolved by the alkali . Muriatic acid throws down a white precipitate . It is the oxyde of tellurium , and is reducible by being . made into a paste with oil , and fubjected to a gradual heat . The metal rifes ...
... falls down ; the reft is diffolved by the alkali . Muriatic acid throws down a white precipitate . It is the oxyde of tellurium , and is reducible by being . made into a paste with oil , and fubjected to a gradual heat . The metal rifes ...
Seite xx
... fall of a stream of water . . IX . Enquiries concerning the Invention and Practice of the Art of Hat- making . P. 467 X. New Obfervations on the Method of producing very loud Fulminations with various Bodies by Means of Phofphorus . By ...
... fall of a stream of water . . IX . Enquiries concerning the Invention and Practice of the Art of Hat- making . P. 467 X. New Obfervations on the Method of producing very loud Fulminations with various Bodies by Means of Phofphorus . By ...
Seite xxi
... fall of water without machines . Causes and effects of the eddies and whirls in rivers , . IV . Concerning a new Variety of Argillaceous Iron - ore . By Samuel L. Mit- chill , M.D. of New York . P. 494 Argillaceous iron - ore figured ...
... fall of water without machines . Causes and effects of the eddies and whirls in rivers , . IV . Concerning a new Variety of Argillaceous Iron - ore . By Samuel L. Mit- chill , M.D. of New York . P. 494 Argillaceous iron - ore figured ...
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afcertain afford againſt alfo alkali alſo appears atmoſphere azotic gas bar iron becauſe bitumen cafe camphor carbon carbonic acid caufe cauſe Charybdis cinnabar circumftances colour combuftion confequently confiderable confifts Corundum cryftals cylinder defcribed Defcription diffolved diſtance earth eſcapement experiments falt faltpetre fame fatellites fecond feems feen feparated fhall fhew fide fimilar firſt fituation fluid fmall foda folar folid folution fome formed fpring ftate fteel fubftance fubject fuch fufficient fulphate fulphuric acid fuppofed furface glafs glaſs gold grains greateſt heat inches increaſe inftrument iron itſelf laft lefs leſs mafs meaſures mercury metal moſt motion mucilage muriatic acid muſt neceffary nitre nitric acid obferved occafioned oppofite oxygen paffed pallet Philofophical phoſphorus plates pofition prefent procefs produced purpoſe quantity reaſon refpecting refult reprefented Scylla ſeparated ſeveral ſhall ſhould ſmall ſtate ſteel ſubſtance ſuch thefe theſe thofe thoſe tube uſed veffel vibration waſhing wheel
Beliebte Passagen
Seite 355 - Armenians, have a singular method of ornamenting watch cases, &c., with diamonds and other precious stones, by simply glueing or cementing them on. The stone is set in silver or gold, and the lower part of the metal made flat, or to correspond with the part to which it is to be fixed; it is then warmed gently, and...
Seite 112 - ... made watertight by means of collars of oiled leather, the box was filled with cold water (viz. at the temperature of 60'), and the machine was put in motion. The result of this beautiful experiment was very striking, and the pleasure it afforded me amply repaid me for all the trouble I had had in contriving and arranging the complicated machinery used in making it.
Seite 113 - BOILED ! It would be difficult to describe the surprise and astonishment expressed in the countenances of the bystanders, on seeing so large a quantity of cold water heated, and actually made to boil, without any fire.
Seite 330 - The winds roared, and the rains fell. The poor white man, faint and weary, came and sat under our tree. He has no mother to bring him milk — no wife to grind his corn.
Seite 107 - Being engaged lately in superintending the boring of cannon in the workshops of the military arsenal at Munich, I was struck with the very considerable degree of Heat which a brass gun acquires in a short time in being bored, and with the still more intense Heat (much greater than that of boiling water, as I found by experiment) of the metallic chips separated from it by the borer.
Seite 13 - Far on the right, her dogs foul Scylla hides: Charybdis roaring on the left presides, And in her greedy whirlpool sucks the tides; Then spouts them from below: with fury driv'n, The waves mount up and wash the face of heav'n.
Seite 112 - ... of the other end of it, it is evident that the machinery could be put in motion, without the least danger of forcing the box out of its place, throwing the water out of it, or deranging any part of the apparatus.
Seite 114 - ... further how large a quantity of heat might be produced by proper mechanical contrivance, merely by the strength of a horse, without either fire, light, combustion, or chemical decomposition; and, in a case of necessity, the heat thus produced might be used in cooking victuals.
Seite 417 - At first they could not be persuaded of the reality of the appearance ; but they soon became so thoroughly convinced, by the cliffs gradually appearing more elevated, and approaching nearer, as it were, that they pointed out, and named to me, the different places they had been accustomed to visit ; such as the Bay, the Old Head or Man, the Windmill, &c. at Boulogne ; St. Vallery, and other places on the coast of Picardy ; which they afterwards confirmed, when they viewed them through their telescopes.
Seite 138 - Paulus ./Egineta fpeaks of fugar, as growing, in his time, in Europe, and alfo as brought from Arabia Felix ; the latter of which he feems to think lefs fweet than the fugar produced in Europe, and neither injurious to the Ûomach nor caufing thirft, as the European fugar was apt to do.