The Chemical Gazette, Band 11843 |
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Seite 23
... brown colour ; they are transparent in thin laminæ , shining , soft but not fatty to the touch , of a peculiar odour , and have an alkaline reaction . Tallow is often added to them , which disseminates crystalline parti- cles of ...
... brown colour ; they are transparent in thin laminæ , shining , soft but not fatty to the touch , of a peculiar odour , and have an alkaline reaction . Tallow is often added to them , which disseminates crystalline parti- cles of ...
Seite 30
... acid and allantoin with the brown oxide of lead . Chlorine , nitric acid , and without doubt many other oxidizing bodies , equally give rise to it when brought into contact with uric 30 Scientific and Medicinal Chemistry .
... acid and allantoin with the brown oxide of lead . Chlorine , nitric acid , and without doubt many other oxidizing bodies , equally give rise to it when brought into contact with uric 30 Scientific and Medicinal Chemistry .
Seite 31
... brown oxide . M. Pelouze has frequently observed the formation of the new acid in this re- action , and several times obtained only allantoin mixed with small quantities of urea ; and as the brown oxide changes allantoin , even in the ...
... brown oxide . M. Pelouze has frequently observed the formation of the new acid in this re- action , and several times obtained only allantoin mixed with small quantities of urea ; and as the brown oxide changes allantoin , even in the ...
Seite 32
... brown , in thin threads , clear , transparent hyacinth red , easily soluble in alcohol , æther , and æthereal oils ; the alcoholic solutions have an acid reaction , and on adding water to them , become opake and milky ; smell , in ...
... brown , in thin threads , clear , transparent hyacinth red , easily soluble in alcohol , æther , and æthereal oils ; the alcoholic solutions have an acid reaction , and on adding water to them , become opake and milky ; smell , in ...
Seite 34
... brown colour , but yet a colour- less oil continued to pass over ; even above 500 ° the temperature continued to rise . Heating was now discontinued , and a brown thick fluid substance remained in the retort , which possessed the smell ...
... brown colour , but yet a colour- less oil continued to pass over ; even above 500 ° the temperature continued to rise . Heating was now discontinued , and a brown thick fluid substance remained in the retort , which possessed the smell ...
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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
Beliebte Passagen
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...