The Chemical Gazette, Or, Journal of Practical Chemistry, in All Its Applications to Pharmacy, Arts, and Manufactures, Volume 10Richard and John E. Taylor, 1852 |
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Common terms and phrases
acetate of lead action æther alcoholic solution alizarine alkalies alumina ammonia analysis anhydrous aqueous solution atoms baryta bromine Carbon Hydrogen carbonic acid caustic cent Chem chloride of calcium clay cobalt colourless composition compound contains cooling crystalline crystals decomposed decomposition dilute dissolved distilled dried at 212 employed equivs evaporated excess filtered fluid formed formula furnished gallic acid grms heated hydrate hydrochloric acid hydrogen Hydrogen Oxygen insoluble iodide iodine lime liquid magnesia manganese mass Mellitate mellitic acid mercury metal mixed mixture muriatic acid neutral nitrate nitric acid nitrogen obtained odour oxalic acid oxide oxide of copper oxide of iron oxide of lead oxide of stibmethylium oxygen perchloride peroxide platinum portion potash potassium powder precipitate prepared present produced protoxide pure readily residue resin salt separated silica silver small quantity soda sorbine substance sulphate sulphuretted hydrogen sulphuric acid tannic acid temperature tion tube vapour washed water-bath whilst yellow zinc
Popular passages
Page 73 - ... carbonate of ammonia or carbonate of soda, and then tested in the usual way for crenic and apocrenic acids by acetate of copper and carbonate of ammonia. In all the varieties, with one exception, abundant flocculent organic matter was separated, which on testing gave evidence of crenic acid in considerable quantities, with doubtful traces of apocrenic acid. The exception alluded to was the specimen examined from Trieste, which did not afford any appreciable flocculent matter on dissolving in...
Page 380 - For the atomic weight of barium the author obtained from two closely-accordant experiments the number 68-789; and concluded with some general observations as to the importance of a systematic series of experiments, to settle, if possible, definitively whether the law of Prout, that the atomic weights of all bodies are multiples of that of hydrogen, be universal. Dr. Andrews concluded by reading an interesting extract from a letter which he had received from Baron Liebig...
Page 248 - They redden litmus, and are readily soluble in water to which a few drops of nitric acid have been added.
Page 72 - In the stalactites from the vaults and cellars of old castles, he says, " we could not detect the smallest traces " of humic acid. " There could scarcely be found a more clear and convincing proof of the absence of the humic acid of chemists in common vegetable mould.
Page 188 - The volatile alkali has the odour of tobacco, an acrid, burning, long-continuing, tobacco taste, and possesses narcotic and very poisonous qualities. In this latter respect it is scarcely inferior to prussic acid, a single drop being sufficient to kill a dog. Its...
Page 72 - Playfair, we have given the result of some examinations of stalactites from caverns in Germany, and from the vaults of old castles upon the Rhine, made with the view of ascertaining the fact of the presence or absence of organic matter in these bodies, either combined or uncombined. The result may be 'stated in the words of the author, Prof. LIEBIG : The stalactites from the caverns " contain no trace of vegetable matter, and no humic acid, and may be heated to redness without becoming black.
Page 350 - ... we now dissolve the acid residue in the smallest possible quantity of water, and introduce the solution into a small test-tube, and add little by little pure powdered bicarbonate of soda or potash, till a fresh quantity produces no further effervescence of carbonic acid. We then agitate the whole with four or five times its bulk of pure ether, and leave it to settle. When the ether swimming on the top is perfectly clear, then decant some of it into a capsule, and leave it in a very dry place...
Page 327 - ... prepared in the dark, no perceptible precipitate is obtained, even on long standing. If the mixture is boiled, however, a precipitate appears. If the precipitate formed by the action of the sun is removed and the liquid boiled, a precipitate appears of a redder shade, probably identical with Bensch's chromate of copper. I have not as yet obtained a quantity sufficient for analysis, either of this or of the
Page 73 - The specimens were dissolved in dilute hydrochloric acid, the flocculent matter separated, collected, and washed, boiled in caustic potash, carbonate of ammonia, or carbonate of soda, and then tested in the usual way for crenic and apocrenic acids by acetate of copper and carbonate of ammonia. In all the varieties, with one exception, abundant flocculent organic matter was separated, which, on testing, gave evidence of crenic acid in considerable quantities, with doubtful traces of apocrenic acid.
Page 118 - The author details some experiments, undertaken by him at the Oxford Botanic Garden, with the view of determining whether the usual quantity of potash and soda existing in barley might be made to vary by causing the plant to grow in soil impregnated with more than the ordinary quantity of one or the other of these alkalies.