The Chemist: A Monthly Journal of Chemical and Physical Science..., Volume 31853 |
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acetic acid action albumen alcohol alkali alkaloid alumina ammonia analysis animal appears applied arsenic baryta bodies boiling calcined cantharidin capsules carbonic acid cent centimetres charcoal chemical chemists chloride cinchona collodion color combination composition compound contains copaiba copper crystallised crystals decomposed decomposition deposited dissolved distilled dried effect employed ether evaporated experiments extract fatty filtered glass grains grammes heat hydrate hydrochloric acid hydrogen insoluble iodide iodine iron lime liquid liquor magnesia manganese manufacture manure matter means metal method mixed mixture nitrate nitric acid nitrogen obtained odor operation oxide oxygen Patent dated phosphorus plate platinum portion potash potassa potassium powder precipitate prepared present produced proportion pure quinine residue resin salt saturated separated silicate silver small quantity soap soda soluble solution substance sulphate sulphuret sulphuric acid surface syrup tained temperature tion treated tube vessel washed weight yellow zinc
Popular passages
Page 326 - Again, the source of such bodies being at all times inconsiderable, they would, if vapours be liable to a speedy attenuation by diffusion so great as to render their action wholly inconceivable. It is more probable that matters of contagion are highly-organized particles of fixed matter, which may find its way into the atmosphere, notwithstanding, like the pollen of flowers, and remain for a time suspended in it...
Page 70 - Jesuits, who had penetrated into China, and Mr. Pigou, were of opinion that both the black and green teas were produced from the same plant ; while Mr. Reeve believed that they were manufactured from two distinct plants. Now, as regarded himself, he (Dr. Royle) had adopted the view that the best kinds of black and green tea were made from different plants ; and examination of tea samples seemed to confirm that view, but a repetition of the experiment had not done so. Mr. Fortune, subsequent to the...
Page 134 - This dissolves the vegetable alkaloid, now free, and remaining in the solution of potash or soda. In either case, we exhaust the matter with ether. Whatever be the agent which has set the alkaloid free, whether it be the bicarbonate of soda or potash, or caustic soda or potash, it remains, by the evaporation of the ether, on the side of the capsule as a solid body, but more commonly as a colorless milky liquid, holding solid matters in suspension. The odor of the substance is animal, disagreeable,...
Page 132 - ... is commonly had to the tribasic acetate of lead, and precipitating the lead afterwards by a current of sulphuretted hydrogen. As I have several times witnessed, this procedure has many and very serious inconveniences. In the first place, the tribasic acetate of lead, even when used in large excess, comes far short of precipitating all the foreign matters ; secondly, the sulphuretted hydrogen, which is used to precipitate the lead, remains in combination with certain organic matters, which undergo...
Page 468 - ... the narcotism came on very speedily, and the insensibility was most decided, but recovery soon took place. Dr. Willis and Mr. Richardson had removed a large tumour from the abdomen of a dog that had been placed under the influence of the narcotic. No sign of pain was shown during the operation, and the animal did well afterwards. The fumes were obtained by burning the fungus. When a moderate quantity was inhaled slowly, the narcotism came on and passed off slowly, the animal exhibiting all the...
Page 79 - ... it was found that ordinary soils possessed the power of separating from solution in water the different earthy and alkaline substances presented to them in manure ; thus, when solutions of salts of ammonia, of potash, magnesia, &c., were made to filter slowly through a bed of dry soil, five or six inches deep, arranged in a flower-pot or other suitable vessel, it was observed that the liquid which first ran through no longer contained any of the ammonia or other salt employed.
Page 87 - I ought to have remarked that the camel's-hair brush should be plunged, the moment it has been used, into hot water, to prevent it from being consolidated by the coagulated gutta percha. " This case caused a great sensation among my patient's friends and relatives, and many were the inquiries made relative to my method of cure. I must confess that my own astonishment at the result was not less than theirs.
Page 79 - These experiments were varied in many different ways with results of more or less interest. It was found that the process of filtration was by no means necessary ; by the mere mixing of an alkaline solution with a proper quantity of soil, as by shaking them together in a bottle and allowing the soil to subside, the same result was obtained ; the action, therefore, was in no way referrible to any physical law brought into operation by the process of filtration.
Page 134 - We cautiously decant the acid liquid, which ought to be limpid and colorless, if the process has been well executed ; the capsule is well washed with some drops of acidulated water, added to the first liquid, and the whole is evaporated to three-fourths in vacuo, or under a bell-jar over sulphuric acid. We put into the residue a very concentrated solution of pure carbonate of potash, and treat the whole liquid with absolute alcohol. This dissolves the alkaloid, while it leaves untouched the sulphate...
Page 120 - The fact is, that there is an almost unlimited supply of the mineral requisites of plants in soils, but that the great agricultural problem is to get at them — to render them available ; and here again it seems reasonable to suppose that abundant cultivation, which lets in carbonic acid and ammonia to the soil, may by that very act be providing the potash and phosphate of lime which the former, and the silica which the latter, are endowed with the power of dissolving, and presenting to the roots...