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The Chemical News and Journal of Industrial Science; with which is ..., Том 10
Повний перегляд - 1864
The Chemical News and Journal of Industrial Science; with which is ..., Том 78
Повний перегляд - 1898
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Сторінка 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
Сторінка 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.
Сторінка 65 - 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.
Сторінка 70 - Committee of Revision and Publication of the Pharmacopoeia of the United States.
Сторінка 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...
Сторінка 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.
Сторінка 47 - 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.
Сторінка 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.
Сторінка 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.