The Chemical Gazette, Band 11843 |
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Seite 92
... potash are likewise unfit for this purpose , as they cannot be brought to a constant weight . The anhydrous biborate of soda or glass of borax , on the contrary , answers all expectations ; it is absolutely fixed , and as it is but ...
... potash are likewise unfit for this purpose , as they cannot be brought to a constant weight . The anhydrous biborate of soda or glass of borax , on the contrary , answers all expectations ; it is absolutely fixed , and as it is but ...
Seite 93
... potash salt , with this precaution , heating the mixed powder gently and for some time previous to weighing , in order to remove the hy- droscopic water which the glass of borax might have taken up during pulverization . The quantity of ...
... potash salt , with this precaution , heating the mixed powder gently and for some time previous to weighing , in order to remove the hy- droscopic water which the glass of borax might have taken up during pulverization . The quantity of ...
Seite 106
... potash , which have previously been fused . This mixture is then introduced into a combustion tube of difficultly fusible glass , 1 foot in length , which is sealed at one end , after having filled the latter for about 1 inch with a ...
... potash , which have previously been fused . This mixture is then introduced into a combustion tube of difficultly fusible glass , 1 foot in length , which is sealed at one end , after having filled the latter for about 1 inch with a ...
Seite 120
... potash , of the neutral chromate and of the bichromate of potash , of the nitrate of lead , of the nitrate of soda , and of the nitrate of potash . There is however a remarkable difference in the solution of these salts . Those first ...
... potash , of the neutral chromate and of the bichromate of potash , of the nitrate of lead , of the nitrate of soda , and of the nitrate of potash . There is however a remarkable difference in the solution of these salts . Those first ...
Seite 121
... potash which produces a more considerable lowering of temperature than the sulphate of the oxide of ammo- nium and the chromate of potash , although these latter salts are more soluble at the ordinary temperature than the former . There ...
... potash which produces a more considerable lowering of temperature than the sulphate of the oxide of ammo- nium and the chromate of potash , although these latter salts are more soluble at the ordinary temperature than the former . There ...
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acetic acid action added æther affords alcohol alkali ammonia analysis antimony aqueous arsenic atoms barytes becomes blue boiling brown carbonate of soda carbonic acid cent Chem chemical CHEMISTRY chloride chromic acid cold colour colourless combination compound concentrated consists contains converted cooling copper crystalline crystals cyanide decomposed decomposition deposited dilute dissolved distilled dried easily employed evaporated excess experiments extract Fahr filtered formed gallic acid gelatine glass grms heat hydrate hydrochloric acid hydrogen insoluble iodic acid iodide iodine iron lime liquid mass mercury metallic method mixed mixture muriatic acid neutral nitrate nitric acid nitrogen obtained odour oxalic oxide oxygen peroxide Pharm phosphate platinum portion potassium powder precipitate prepared produced protoxide pure residue resin salt saturated separated silver small quantity smell solanine soluble solution substance sugar sulphate sulphuretted hydrogen sulphuric acid temperature tion treated tube vapours vessel vinegar weight yellow zinc
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Seite 232 - Some cause there must be, which would explain how the practice has become a necessary of life to whole nations. But it is surely still more remarkable, that the beneficial effects of both plants on the health must be ascribed to one and the same substance, the presence of which in two vegetables, belonging to different natural families, and the produce of different quarters of the globe, could hardly have presented itself to the boldest imagination.
Seite 555 - TREATISE ON FOOD AND DIET: With Observations on the Dietetical Regimen suited for Disordered States of the Digestive Organs ; and an Account of the Dietaries of some of the principal Metropolitan and other Establishments for Paupers, Lunatics, Criminals, Children, the Sick, &c. By JON. PEREIRA, MDFRS & LS Author of
Seite 232 - We shall never certainly be able to discover how men were led to the use of the hot infusion of the leaves of a certain shrub (tea), or of a decoction of certain roasted seeds (coffee). Some cause there must be which would explain how the practice has become a necessary of life to whole nations.
Seite 377 - ... the wound is charred, soon after which the liquid begins to ooze out. A small gutter is cut in the wood to conduct the liquid into a vessel placed to receive it. The average produce of the best trees during the season, is said to be sometimes 40 gallons.
Seite 256 - The mixture was placed in a watch-glass, and spread out so as to expose a large surface to the air; the watch-glass was placed on a support in a copper vessel (the air contained in this vessel could be brought to any required temperature). The experiment being thus disposed, the vessel was heated, and by the time that the air in the interior arrived at 248° Fah. a change began to take place in the mixture, and at 266° Fah.
Seite 503 - ... improvements in the manufacture of glass, for the purpose of producing glass which may be used for the purposes to which plate glass and window glass are usually applied. June 4 ; six months. 'Edmund Tuck, of the Haymarket, St. James's, Westminster, silversmith, for certain improvements in the covering or plating with silver various metals and metallic alloys.
Seite 223 - This invention consists in combining chlorine in the state of gas with the vapour of mercury or quicksilver, in order to produce calomel and corrosive sublimate.
Seite 164 - I mix with the bones, bone ash, or bone dust, or, with apatite or phosphorite or any other substance containing phosphoric acid, a quantity of sulphuric acid, just sufficient to set free as much phosphoric acid as will hold in solution the undecomposed phosphate of lime...
Seite 560 - I apply heat to the vessel in which the spirit is contained, so as to drive the spirit over in vapour, •which passes along the pipes into the successive vessels, and through the liquid contained in them. The temperature of the liquids contained in the several vessels may thus be kept above the condensing point of the vapour, either by the heat of the vapour itself or by external heat applied to the several vessels. The vapour from the last of these vessels is conducted to a condenser and condensed...
Seite 473 - Mr. Nash had a bonfire of tar barrels lighted on the roof of Cowes castle. Another advantage is stated to be, the facility of repair which the composition offers, as if a leak occurs, it can be seared and rendered perfectly water-tight, by passing a hot iron over it ; and when taken up, the mixture can be remelted and used again. The author proposes to obviate the disadvantage of the present weight of these roofs, by building single brick walls at given distances, to carry slates, upon which the...