The Chemical Gazette, Or, Journal of Practical Chemistry, in All Its Applications to Pharmacy, Arts, and Manufactures, Band 1R. and J. E. Taylor, 1843 |
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Seite 12
... extract all the potassa from the mixed oxides : it is best to test for it after they have been heated . Another method by Ullgren . The oxides of nickel , cobalt and zinc are precipitated by carbonate of soda , the whole evaporated ...
... extract all the potassa from the mixed oxides : it is best to test for it after they have been heated . Another method by Ullgren . The oxides of nickel , cobalt and zinc are precipitated by carbonate of soda , the whole evaporated ...
Seite 14
... extract of either of the above mentioned adulterations is rendered opake , and at length precipitated . - Jahrbuch für Prakt . Pharm . 1842 , p . 73 . On the Barks of Commerce . We have selected for our present Number , under the head ...
... extract of either of the above mentioned adulterations is rendered opake , and at length precipitated . - Jahrbuch für Prakt . Pharm . 1842 , p . 73 . On the Barks of Commerce . We have selected for our present Number , under the head ...
Seite 15
... extract removed , and the residue treated again with a mixture of 10 grains sulphuric acid and 8 ounces water . The extracts united , clarified by settling , poured off from the sediment , and digested at a moderate tempera- ture with ...
... extract removed , and the residue treated again with a mixture of 10 grains sulphuric acid and 8 ounces water . The extracts united , clarified by settling , poured off from the sediment , and digested at a moderate tempera- ture with ...
Seite 16
... extract the finely powdered bark immediately with absolute æther , to evaporate the solution , treat the residue with strong alcohol , decolorize the solution with charcoal , and to leave the filtrated solution to spontaneous ...
... extract the finely powdered bark immediately with absolute æther , to evaporate the solution , treat the residue with strong alcohol , decolorize the solution with charcoal , and to leave the filtrated solution to spontaneous ...
Seite 62
... extracts a green matter from the branches , which changes to yellow when acted on by alkalies . The sap of the unripe fruit ... extract also undergoes change by boiling . It is therefore evident that the colouring principle of the Cactus ...
... extracts a green matter from the branches , which changes to yellow when acted on by alkalies . The sap of the unripe fruit ... extract also undergoes change by boiling . It is therefore evident that the colouring principle of the Cactus ...
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Häufige Begriffe und Wortgruppen
acetic acid action added æther affords alcohol alkali ammonia analysis antimony aqueous arsenic atoms barytes becomes blue body 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 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 potassa 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 yellow zinc
Beliebte Passagen
Seite 51 - A TOXICOLOGICAL CHART, exhibiting at one view the Symptoms, Treatment, and Mode of Detecting the various Poisons, Mineral, Vegetable, and Animal. To which are added, concise Directions for the Treatment of Suspended Animation.
Seite 553 - 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 230 - 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 669 - We believe that the importation of one hundredweight of guano is equivalent to the importation of eight hundred-weight of wheat — the hundred-weight of guano assumes in a time which can be accurately estimated the form of a quantity of food corresponding to eight hundred- weight of wheat. The same estimate is applicable in the valuation of bones.
Seite 696 - Tables of the Elementary and Compound Bodies, systematically arranged, and adapted as Tables of Equivalents, or as Chemical Labels. By Charles Button and Warren De la Rue.
Seite 667 - ... excellent remuneration. The origin and formation of sulphuric acid was studied most carefully ; and from year to year, better, simpler, and cheaper methods for making it were discovered. With every improvement in the mode of manufacture, its price fell ; and its sale increased in an equal ratio. Sulphuric acid is now manufactured in leaden chambers, of such magnitude that they would contain the whole of an ordinary-sized house. As regards the process and the apparatus, this manufacture has reached...
Seite 254 - 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 669 - MY recent researches into the constituent ingredients of our cultivated fields have led me to the conclusion that, of all the elements furnished to plants by the soil and ministering to their nourishment, the phosphate of lime — or, rather, the phosphates generally — must be regarded as the most important.
Seite 669 - ... plants which contain the least amount of the phosphates, and therefore require the smallest quantity for their development. These roots contain 80° to 92° per cent, of water. Their great bulk makes the amount of produce fallacious, as respects their adaptation to the food of animals, inasmuch as their contents of the ingredients of the blood...
Seite 230 - 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.