Chemical Essays: Principally Relating to the Arts and Manufactures of the British Dominions, Volume 2author, and published, 1823 - Chemical engineering |
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Page 12
... practice which I am now attempting to enforce . In scouring woollen yarn to free it from the oil which is combined with it in combing and spin- ning , it is no uncommon thing for the workmen to 12 A remarkable instance of the economy of ...
... practice which I am now attempting to enforce . In scouring woollen yarn to free it from the oil which is combined with it in combing and spin- ning , it is no uncommon thing for the workmen to 12 A remarkable instance of the economy of ...
Page 54
... practice of medicine by Dr. George Pearson . It consists of Soda Phosphoric acid 29.5 26.0 55.5 When crystallized , the proportions are very diffe- rent , as the crystals contain more than half their weight of water . These are often ...
... practice of medicine by Dr. George Pearson . It consists of Soda Phosphoric acid 29.5 26.0 55.5 When crystallized , the proportions are very diffe- rent , as the crystals contain more than half their weight of water . These are often ...
Page 92
... Practice , in which Practice is always the instructor , while Theory is represented as a scholar proud of his own understanding , but indocile and ignorant . The high reputation he acquired , and the obliga- tions under which his ...
... Practice , in which Practice is always the instructor , while Theory is represented as a scholar proud of his own understanding , but indocile and ignorant . The high reputation he acquired , and the obliga- tions under which his ...
Page 106
... practice to be enabled to un- derstand the nature of clays sufficiently to employ them in pottery to the best advantage . Dr. Lewis , 65 An interesting enumeration of a variety of other uses to which clay may be applied , will be found ...
... practice to be enabled to un- derstand the nature of clays sufficiently to employ them in pottery to the best advantage . Dr. Lewis , 65 An interesting enumeration of a variety of other uses to which clay may be applied , will be found ...
Page 122
... practice , as to deserve being mentioned , and which I have the leave of the proprietor to make public . The improvement to which I refer , is that of having a chamber shelved entirely round , not with stones or boards as is usual , but ...
... practice , as to deserve being mentioned , and which I have the leave of the proprietor to make public . The improvement to which I refer , is that of having a chamber shelved entirely round , not with stones or boards as is usual , but ...
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Common terms and phrases
alkali ammonia ancient Annales de Chimie apparatus barytes become bismuth bleacher bleaching boiling calicoes carbonic acid Chemical Chemistry chlorine clay cloth colour common considerable contains copper crucibles crystals deliquescent described dissolved earth earthenware edge tools edition employed Equivalent Number Essay experiments fire fixed alkalies flint flint glass fluid furnace glass glaze hard heat inches instruments iron Journal kelp kind lead 4 tin lime linen liquor London magnesia manganese manufacture melted memoir metal method mixture muriate muriatic acid nature Nicholson's nitre octavo operation oven oxalate oxide oxygen Paris pearlash Philosophical piece plates Pliny porcelain portion potash potash.-This pottery prepared produced proportion pure purpose quantity quarto reverberatory furnace sal-ammoniac salt sand says silica soap soda soluble solution specific gravity steel substance sufficient sulp sulphate sulphuret sulphuric acid surface temperature tempering tion usually vessels volume ware workmen
Popular passages
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 74 - And the Egyptians made the children of Israel to serve with rigour. And they made their lives bitter with hard bondage, in mortar, and in brick, and in all manner of service in the field: all their service, wherein they made them serve, was with rigour.
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....