Chemical News and Journal of Industrial Science, Volúmenes27-28Chemical news office., 1773 |
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Página 3
... known ? Of the several purely methylic cumidines which are possible , two only are somewhat accurately known ; these are the two bases , which are derived , the one from so - called pseudocumol ( obtained by treating xylilic bromide and ...
... known ? Of the several purely methylic cumidines which are possible , two only are somewhat accurately known ; these are the two bases , which are derived , the one from so - called pseudocumol ( obtained by treating xylilic bromide and ...
Página 6
... known as " kidney ore , " while from its deep rich red colour in some varieties , it These ores may is known as hæmatite , or blood - stone . be readily distinguished from the magnetic by their giving in all cases a red powder when ...
... known as " kidney ore , " while from its deep rich red colour in some varieties , it These ores may is known as hæmatite , or blood - stone . be readily distinguished from the magnetic by their giving in all cases a red powder when ...
Página 14
... known strength by means of chloride of antimony , or by investigating a known quantity of pure protoxide of manganese according to the method described above . By mixing pure solutions of manganese ( I often used for this purpose ...
... known strength by means of chloride of antimony , or by investigating a known quantity of pure protoxide of manganese according to the method described above . By mixing pure solutions of manganese ( I often used for this purpose ...
Página 18
... known , might have been expected . Granted ; then , a fortiori , soil analysis , involving the determination of lime , is of considerable use in determining the present and future value of soils . In speaking of the " amount " of lime ...
... known , might have been expected . Granted ; then , a fortiori , soil analysis , involving the determination of lime , is of considerable use in determining the present and future value of soils . In speaking of the " amount " of lime ...
Página 26
... known as white iron . The latter is a variety of pig - iron , in which the carbon is chemically combined with the iron . Spiegeleisen is a typical example of this kind of iron . And now the com- bustion of the carbon begins , the ...
... known as white iron . The latter is a variety of pig - iron , in which the carbon is chemically combined with the iron . Spiegeleisen is a typical example of this kind of iron . And now the com- bustion of the carbon begins , the ...
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Términos y frases comunes
acetic acid action alcohol alkaline alumina ammonia analysis aniline anthracene apparatus appears applied Assays atoms barium baryta body boiling bromine calcium carbonic acid caustic cent chemical chemistry chemists chloric acid chloride coal colour combination composition compounds containing converted copper crystallisation crystals decomposed decomposition deposited dilute dissolved distilled electricity employed ether evaporation experiments filtered flask formation formed formic acid 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 yields zinc
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Página 14 - 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 108 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Página 232 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Página 5 - Thy Father has written for thee." " Come, wander with me," she said, "Into regions yet untrod; And read what is still unread In the manuscripts of God." And he wandered away and away With Nature, the dear old nurse, Who sang to him night and day The rhymes of the universe. And whenever the way seemed long, Or his heart began to fail, She would sing a more wonderful song, Or tell a more marvellous tale.
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 144 - London. /Chemical Technology, or Chemistry in its ^-^ Applications to the Arts and Manufactures. By THOMAS RICHARDSON and HENRY WATTS.
Página 96 - 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 253 - ... effect is proportional to the magnetic intensity of the bar multiplied by the current traversing the coil seems to indicate that in this case the effect is produced by the attraction of the magnetic particles by the coil. But then it will be asked why so remarkable an augmentation of the effect is produced by the increase of tension in the case of the soft iron bars. When we are able to answer this question in a satisfactory manner, we shall probably have a much more complete acquaintance with...
Página 73 - Since it appeared that the purest and densest vapour alone gave the greatest number of lines, it became of interest to examine the spectra of compounds consisting of a metal combined with a nonmetallic element. 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...
Página 224 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.