The Chemical News and Journal of Physical Science, Volumes 27-28Griffin, Bohn and Company, 1773 |
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Página 2
... remains behind with the excess of methylic iodide , from which it may easily be separated by means of hydrochloric acid . It deserves to be noticed that while the boiling - point of solid toluidine ( 202 ° ) , by the introduction of two ...
... remains behind with the excess of methylic iodide , from which it may easily be separated by means of hydrochloric acid . It deserves to be noticed that while the boiling - point of solid toluidine ( 202 ° ) , by the introduction of two ...
Página 4
... remains tolerably constant , the distillate solidifying in the receiver to a white crystalline mass . On fractionating the liquid portion passing over before 200 ° , no product can be obtained showing a constant boiling - point ; but on ...
... remains tolerably constant , the distillate solidifying in the receiver to a white crystalline mass . On fractionating the liquid portion passing over before 200 ° , no product can be obtained showing a constant boiling - point ; but on ...
Página 13
... results we have had the pleasure of laying before you afford sufficient proof that the use of the wedgwood mortar involves a more or less serious depreciation of the sample , and that under these circumstances the_proba- | remains.
... results we have had the pleasure of laying before you afford sufficient proof that the use of the wedgwood mortar involves a more or less serious depreciation of the sample , and that under these circumstances the_proba- | remains.
Página 14
sample , and that under these circumstances the_proba- | remains in solution , and this quantity does not vitiate the bility of the attainment of a result representing the true results . In order to obviate the washing of the ...
sample , and that under these circumstances the_proba- | remains in solution , and this quantity does not vitiate the bility of the attainment of a result representing the true results . In order to obviate the washing of the ...
Página 17
... remains very nearly constant , being for Read at the Dubuque Meeting of the Am . Assoc . Adv . Sci . , August , 1872 . Very sandy soils , 15 to 20 per cent . Loam soils , 5'0 to 8.5 Clay soils , very heavy 12'0 to 15'0 .. .. .. 99 ...
... remains very nearly constant , being for Read at the Dubuque Meeting of the Am . Assoc . Adv . Sci . , August , 1872 . Very sandy soils , 15 to 20 per cent . Loam soils , 5'0 to 8.5 Clay soils , very heavy 12'0 to 15'0 .. .. .. 99 ...
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Palavras e frases frequentes
acetic acid action alcohol alkaline alumina ammonia analysis aniline apparatus appears applied arsenic acid Assays atoms barium baryta body boiling bromine calcium carbonic acid caustic cent chemical chemistry chemists chloric acid chloride coal colour composition compounds containing converted copper crystallisation crystals cymene decomposed decomposition deposit dilute dissolved distilled employed ether evaporation experiments filtered flask formation formed formula furnace fused glass heat hydrate hydrochloric acid hydrogen Improvements insoluble iodide iron Laboratory lime liquid magnesia manganese manufacture matter metallic method methyl mineral mixture nitrate nitric acid nitrogen observed obtained ordinary oxalic oxide oxidising oxygen paper PATENTS phosphate phosphoric acid potash potassa potassium precipitate prepared present produced pure pyrites quantity reaction Royal salt sample silicate silver Society soda sodium soluble solution substance sulphate sulphide sulphuretted hydrogen sulphuric acid temperature tion toluidine treated tube vapour washed weight yields zinc
Passagens conhecidas
Página 98 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Página 83 - President in the chair. After the minutes of the previous meeting had been read and confirmed, the Society proceeded to the election of officers and members of Council for the year next ensuing.
Página 230 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Página 6 - Others apart sat on a hill retired, In thoughts more elevate, and reasoned high Of Providence, Foreknowledge, Will, and Fate— Fixed fate, free will, foreknowledge absolute — And found no end, in wandering mazes lost.
Página 170 - By a delicate mathematical analysis, Thomson arrives at the theorem that the ''average pressure at any point of an incompressible, frictionless fluid, originally at rest, but set in motion and kept in motion by solids, moving to and fro, or whirling round in any manner, through a finite space of it," would explain the attractions just described.
Página 98 - Supplement; bringing the Record of Chemical Discovery down to the end of the year 1869 ; including also several Additions to, and Corrections of, former results which have appeared in 1870 and 1871.
Página 75 - Experiments with chlorides are recorded. It was found in all cases that the difference between the spectrum of the chloride and the spectrum of the metal was that under the same spark-conditions all the short lines were obliterated. Changing the spark-conditions, the final result was that only the very longest lines in the spectrum of the metallic vapour remained.
Página 222 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.