Avis des internautes - Rédiger un commentaire
Aucun commentaire n'a été trouvé aux emplacements habituels.
Autres éditions - Tout afficher
Chemical Essays, Principally Relating to the Arts and Manufactures ..., Volume 2
Affichage du livre entier - 1823
acid alkali already ammonia ancient appears become bismuth bleaching boiling called carbonate chemical chlorine clay cloth colour common completely consequence considerable consists contains covered crystals described earth edge edition effect employed Essay established experiments fire fixed furnace give given glass ground hard heat History important iron Italy Journal kind known late lead less lime linen London manner manufacture materials matter means melted mentioned metal method mixed muriate nature necessary observed obtained occasion operation oxide persons piece plates porcelain portion potash pottery practice prepared present probably produced properties proportion pure quantity remains remarks render respecting salt sand says seen Society soda solution steel stone substance sufficient sulphuric surface taken temperature tion usually various vessels volume ware weight whole
Page 75 - Ask of me, and I shall give thee the heathen for thine inheritance, and the uttermost parts of the earth for thy possession. Thou shalt break them with a rod of iron; thou shalt dash them in pieces like a potter's vessel.
Page 594 - And twelve lions stood there on the one side and on the other upon the six steps. There was not the like made in any kingdom. 20 If And all the drinking vessels of king Solomon were of gold and all the vessels of the house of the forest of Lebanon were of pure gold: none were of silver; it was not any thing accounted of in the days of Solomon.
Page 462 - Then hurl'd the hero, thundering on the ground, A mass of iron (an enormous round), Whose weight and size the circling Greeks admire, Rude from the furnace, and but shaped by fire.
Page 60 - ... was soon observed to take place. The potash began to fuse at both its points of electrization. There was a violent effervescence at the upper surface : at the lower or negative surface, there was no liberation of elastic fluid; but small globules, having a high metallic lustre, and being precisely similar, in visible characters to quicksilver, appeared ; some of which burnt with explosion, and bright flame, as soon as they were formed, and others remained, and were merely tarnished, and finally...
Page 62 - When a globule of the basis of potash is placed upon ice, it instantly burns with a bright flame, and a deep hole is made in the ice, which is found to contain a solution of potash.
Page 569 - As he that taketh away a garment in cold weather, and as vinegar upon nitre: so is he that singeth songs to an heavy heart.
Page 343 - Thus far extend, thus far thy bounds, This be thy just circumference, O world. Thus God the heaven created, thus the earth, Matter unform'd and void. Darkness profound Cover'd the abyss ; but on the watery calm His brooding wings the Spirit of God outspread, And vital virtue infused and vital warmth Throughout the fluid mass...
Page 489 - Instead of the customary mode of hardening the blade from the anvil, let it be passed immediately from the hands of the forger to the grinder ; a slight application of the stone will remove the whole of the scale or coating, and the razor will then be properly prepared to undergo the operation of hardening with advantage. It will be easily ascertained, that steel in this state heats...
Page 523 - The verifiable ingredient is used ouly inasmuch as a fusible body, which flows over the surface of the metal in the crucibles, and prevents the access of the oxygen of the atmosphere. Broken glass is sometimes used for this purpose. When thoroughly fused it is cast into ingots, which by gentle heating and careful hammering, are tilted into bars. By this process the steel becomes more highly carbonized in proportion to the quantity of flux, and in consequence is more brittle and fusible than before....