A Treatise on the Progressive Improvement: And Present State of the Manufacture of Porcelain and GlassLongman, Reese, Orme, Brown, and Green, 1838 - 334 Seiten |
Im Buch
Ergebnisse 1-5 von 80
Seite 26
... iron ; when breathed on it exhales an odour which , from its peculiarity , takes its name from the material ,、 and is termed argillaceous . This is owing to the oxide of iron which is mixed with it , as clay , when absolutely pure ...
... iron ; when breathed on it exhales an odour which , from its peculiarity , takes its name from the material ,、 and is termed argillaceous . This is owing to the oxide of iron which is mixed with it , as clay , when absolutely pure ...
Seite 28
... iron , or magnesia , & c . The different kinds of clay are most abundantly spread over the globe , forming in many situations entire moun- tains , in other places existing in vast beds , and else- where lying among other mineral ...
... iron , or magnesia , & c . The different kinds of clay are most abundantly spread over the globe , forming in many situations entire moun- tains , in other places existing in vast beds , and else- where lying among other mineral ...
Seite 30
... iron , are valuable for the great whiteness which they exhibit when burnt . The Dorsetshire clay is brought from the Isle of Purbeck . It is of two kinds , distinguished as brown clay and blue clay : that from Devonshire comes from the ...
... iron , are valuable for the great whiteness which they exhibit when burnt . The Dorsetshire clay is brought from the Isle of Purbeck . It is of two kinds , distinguished as brown clay and blue clay : that from Devonshire comes from the ...
Seite 33
... iron 7.3 , magnesia 1.5 , chrome 1.2 . It also contains traces of lime and muriatic acid . In a published letter addressed by M. Proust to M. Vauquelin from Madrid , mention is made of a beautiful kind of porcelain produced in that city ...
... iron 7.3 , magnesia 1.5 , chrome 1.2 . It also contains traces of lime and muriatic acid . In a published letter addressed by M. Proust to M. Vauquelin from Madrid , mention is made of a beautiful kind of porcelain produced in that city ...
Seite 36
... iron cylinder , four feet deep , and twenty inches in diameter . Through the centre of this cylinder runs an upright shaft , furnished with knives placed as radii at right angles to the shaft , but so arranged upon it that their flat ...
... iron cylinder , four feet deep , and twenty inches in diameter . Through the centre of this cylinder runs an upright shaft , furnished with knives placed as radii at right angles to the shaft , but so arranged upon it that their flat ...
Andere Ausgaben - Alle anzeigen
A Treatise on the Progressive Improvement, and Present State of the ... George Richardson Porter Keine Leseprobe verfügbar - 2012 |
A Treatise On The Progressive Improvement And Present State Of The ... George Richardson Porter,Treatise Keine Leseprobe verfügbar - 2023 |
Häufige Begriffe und Wortgruppen
acid alkali already annealing antimony appear applied artist baking basaltic borax brought calcined China Chinese clay cobalt colour composed composition compound considerable contain copper crown glass crucible degree of heat described diameter earth earthenware effect employed enamel equal felspar fire flint glass fluid flux furnace fused fusible fusion glaze gold grinding Guinand gypsum imparting inches ingredients kao-lin kiln kind labour lime litharge Loysel manganese manner manufacture mass materials means melted glass ment metallic oxides minium mixed mixture mould nitre occasion operation ornaments oxide oxide of iron oxide of lead painting perfect perfectly pieces placed plate glass polished porcelain portion potash pottery powder preparation produced proportion purpose quantity Ravenhead rendered requisite sand seggars silex silica soda specific gravity specimens substance sufficiently surface temperature thickness transparent tube various varnish vessels vitrified ware weight wherein whole workman
Beliebte Passagen
Seite 127 - Yet, by some such fortuitous liquefaction, was mankind taught to procure a body, at once, in a high degree, solid and transparent, — which might admit the light of the sun, and exclude the violence of the wind : — which might extend the sight of the philosopher to new ranges of existence ; and charm him, at one time, with the unbounded extent of the material...
Seite 126 - Who, when he saw the first sand or ashes, by a casual intenseness of heat, melted into a metalline form, rugged with excrescences, and clouded with impurities, would have imagined, that in this shapeless lump lay concealed so many conveniencies of life, as would in time constitute a great part of the happiness of the world...
Seite 15 - Dunstable, to seek a remedy for a disorder in his horse's eyes ; when the ostler at the inn, by burning a flint, reduced it to a fine powder, which he blew into them. The potter, observing the beautiful white colour of the flint after calcination, instantly conceived the use to which it might be applied in his art.
Seite 127 - ... of nature, and succour old age with subsidiary sight. Thus was the first artificer in glass employed, though without his own knowledge or expectation. He was facilitating and prolonging the enjoyment of light, enlarging the avenues of science, and conferring the highest and most lasting pleasures ; he was enabling the student to contemplate nature, and the beauty to behold herself.
Seite 16 - Its excellent workmanship, its solidity, the advantage which it possesses of sustaining the action of fire, its fine glaze impenetrable to acids, the beauty and convenience of its form, and the cheapness of its price, have given rise to a commerce so active and universal, that, in travelling from Paris to...
Seite 17 - Basaltes ; a white and a cane-coloured porcelain biscuit, both smooth and of a wax-like appearance ; and another white porcellaneous biscuit, distinguished as jasper, having in general all the properties of the basaltes, with a very important addition, the capability of receiving through its whole substance, from the admixture of metallic oxides, the same colours as those oxides communicate to glass or enamel in fusion. This peculiar property...
Seite 16 - Parts to Petersburg, from Amsterdam to the furthest part of Sweden, and from Dunkirk to the extremity of the south of France, one is served at every inn upon English ware. Spain, Portugal, and Italy are supplied with it ; and vessels are loaded with it for the East Indies, the West Indies, and the continent of America.
Seite 20 - The coasting vessels, which, after having been employed at the proper season in the Newfoundland fishery, carry these materials coastwise to Liverpool and Hull, to the amount of more than 20,000 tons yearly ; and at times when, without this employment, they would be laid up idle in harbour.
Seite 20 - Though the manufacturing part alone in the Potteries, and their immediate vicinity, gives bread to 15 or 20,000 people, yet this is but a small object when compared with the many others which depend on it...