Chemical News and Journal of Industrial Science, Volum 63Chemical news office, 1891 |
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Resultat 1-5 av 83
Side 3
... quantity of some oxidising substance , such as hydrogen peroxide or po- tassium chlorate , or , as less efficacious , potassium permanganate , or to pass a current of air or , lastly , such a substance as urea , which destroys the ...
... quantity of some oxidising substance , such as hydrogen peroxide or po- tassium chlorate , or , as less efficacious , potassium permanganate , or to pass a current of air or , lastly , such a substance as urea , which destroys the ...
Side 4
... quantity of hydrogen one would expect to be occluded by carbon formed under these conditions , and he also pointed out that if the soot were a heavy hydrocarbon condensed by a cold surface , cooling the vapour present in the flame , it ...
... quantity of hydrogen one would expect to be occluded by carbon formed under these conditions , and he also pointed out that if the soot were a heavy hydrocarbon condensed by a cold surface , cooling the vapour present in the flame , it ...
Side 10
... Quantities of Aluminium and Cast - Iron in Cast - Irons and Steels . - Adolphe Carnot . - Aluminium has been used of ... quantity of iron , which is not thrown down if the precaution has been taken of re- ducing the ferric salt to the ...
... Quantities of Aluminium and Cast - Iron in Cast - Irons and Steels . - Adolphe Carnot . - Aluminium has been used of ... quantity of iron , which is not thrown down if the precaution has been taken of re- ducing the ferric salt to the ...
Side 11
... quantity of silica may remain in solution , and must be eliminated subsequently , but it is convenient not to make this elimination at the outset by evaporating the solution to dryness , as an excessive quantity of ferrous salt is ...
... quantity of silica may remain in solution , and must be eliminated subsequently , but it is convenient not to make this elimination at the outset by evaporating the solution to dryness , as an excessive quantity of ferrous salt is ...
Side 12
... quantities , only the decomposition of the zinc powder is slow and imperfect . If a more con- centrated solution is used , and in greater quantity , the Supply all Books reviewed in this Journal or elsewhere within the decomposition is ...
... quantities , only the decomposition of the zinc powder is slow and imperfect . If a more con- centrated solution is used , and in greater quantity , the Supply all Books reviewed in this Journal or elsewhere within the decomposition is ...
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acetic acid action alcohol alkaline aluminium ammonia ammonium amount antimony apparatus arabinose atomic weight band barium blue boiling bright bromine calcium carbon cent Chem Chemical Society chemistry chemists chloride cobalt colour compound containing copper crystalline cyanide decomposed deposit determined dilute dioxide dissolved distilled electricity ether ethyl evaporation excess experiments filtered filtrate flame flask formed gases give glass heat hydrate hydrochloric acid hydrogen iron liquid London magnesium manganese matter means mercury metal method mixture molecular molecules negative pole nickel nitrate nitric acid nitrogen observed obtained ordinary oxide oxygen paper phosphate phosphorescence phosphoric acid phosphorus platinum potassium precipitate present pressure Prof Professor pure reaction residue salt sample silver soda sodium soluble solution specific gravity spectrum substance sulphate sulphide sulphocyanide sulphuric acid temperature tion tube vapour washed whilst WILLIAM CROOKES xylose zinc
Populære avsnitt
Side 252 - THE METALLURGY OF GOLD. A Practical Treatise on the Metallurgical Treatment of Gold-bearing Ores. Including the Assaying, Melting, and Refining of Gold. By M. EISSLER, M, Inst. MM Fifth Edition, Enlarged. With over 300 Illustrations and numerous Folding Plates. Medium 8vo, cloth .... Net 21 /O " This book thoroughly deserves its title of a
Side 161 - Here hills and vales, the woodland and the plain, Here earth and water, seem to strive again ; Not chaos-like together crushed and bruised, But as the world harmoniously confused: Where order in variety we see, And where, though all things differ, all agree.
Side 63 - No English text-book at all approaches this in the COMPLETENESS with which the most modern views on the subject are dealt with. Professor Austen's volume will be INVALUABLE, not only to the student, but also to those whose knowledge of the art is far advanced.
Side 68 - Committee of Revision and Publication of the Pharmacopoeia of the United States.
Side 270 - The last-mentioned was generally received as a popular work, which, to those who study it more closely, it really is not, or was not at the time when it appeared. Mistakes were made, not in the facts, but in the deductions about organic reactions ; we were the first pioneers in unknown regions, and the difficulties in the way of keeping on the right path were sometimes insuperable. Now, when the paths of research are beaten roads, it is a much easier matter ; but all the wonderful discoveries which...
Side 269 - There was no actual instruction ; I received from each individual every morning a report upon what he had done on the previous day, as well as his views on what he was engaged upon. I approved or made my criticisms.
Side 45 - A given space contains millions of millions of molecules in rapid movement in all directions, each molecule having millions of encounters in a second. In such a case, the length of the mean free path of the molecules is exceedingly small compared with the dimensions of the containing vessel, and the properties which constitute the ordinary gaseous state of matter, which depend upon constant collisions, are observed. What, then, are these molecules ? Take a single lone molecule in space.
Side 117 - ... reflected from a concave mirror through a foggy atmosphere. Green Phosphorescent Light of Molecular Impact. — At very high exhaustions the dark space becomes so large that it fills the tube. Careful scrutiny still shows the presence of the dark violet focus; and the part of the glass on which fall the rays diverging from this focus shows a sharply defined spot of greenish-yellow light.
Side 155 - JOHN HENRY GARRETT, MD Licentiate in Sanitary Science and Diplomate in Public Health, Universities of Durham and Cambridge, &c. THE ACTION OF WATER ON LEAD; being an inquiry into the Cause and Mode of the Action and its Prevention. Crown 8vo, 4s. 6d.