Chemical News and Journal of Industrial Science, כרך 63Chemical news office, 1891 |
מהדורות אחרות - הצג הכל
מונחים וביטויים נפוצים
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
קטעים בולטים
עמוד 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
עמוד 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.
עמוד 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.
עמוד 68 - Committee of Revision and Publication of the Pharmacopoeia of the United States.
עמוד 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...
עמוד 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.
עמוד 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.
עמוד 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.
עמוד 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.