 With this arrangement the number of sounding gases and vapors was rapidly increased. But I was soon made aware that the glass lenses withdrew from the beam its most effectual rays. The silvered mirrors employed in my previous researches were therefore...  Proceedings of the Royal Society of London - Page 309by Royal Society (Great Britain) - 1881Full view - About this book
 | John Davy - 1867 - 12 pages
...Observations on fwcubcrfL&n. By JOHN DAVY, MD, FRS, Lond. and Edin. (Read April 16, 1866.) The observations which I have now the honour to submit to the Society were made chiefly with the intent to endeavour to ascertain whether, in the instance of the egg of the common... | |
 | 1881 - 904 pages
...rude ; it is, however, very effective. With this arrangement the number of sounding gases and vapors was rapidly increased. But I was soon made aware that...curious and striking results which I have now the honor to submit to the Society were obtained. Sulphuric ether, formic ether, and acetic ether, being... | |
 | Royal Institution of Great Britain - 1884 - 540 pages
...apparatus of Mr. Graham Bell, the arrangement here described is rude : it is, however, very effective. With this arrangement the number of sounding gases...acting sometimes singly and sometimes as conjugate * On November 29 : see ' Journal of the Society of Telegraph Engineers,' December 8, 1880. t When the... | |
 | 1881 - 684 pages
...rude ; it is, however, very effective. With this arrangement the number of sounding gases and vapors was rapidly increased; but I was soon made aware that...curious and striking results, which I have now the honor to submit to the Society, were obtained. Sulphuric ether, formic ether and acetic ether, being... | |
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