Scientific American Volume 44; Supplement. N° de ref. de la librería
Sinopsis: This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 Excerpt: ...toward the left, at the same time. 2. Where the liquor first came out from under the scum, it seemed to move the most briskly, flowing almost like a stream whose motion upward had been checked, and, as it were, reverberated by that incumbent obstacle. 3. Several motions in this liquor were the more easy to be observed, because, though it were dark, yet it was not uniform; consisting in part of oily and bituminous ingredients, which, though they seemed to have but one common superficies with the rest of the liquor, yet, by their colors and power of vigorously reflecting the light, they were easily enough distinguishable from the rest. And I often observed that some of these unctuous portions of the matter, emerging to the surface of the liquor, though perhaps at first one of them would not appear bigger than a pin's head, yet, in moving forward, it would at the same time diffuse itself circularly, and make, as it were, a great halo, adorned with the colors of the rainbow, and so very vivid as afforded a very pleasant, and at first surprising spectacle; these phantasms often nimbly succeeding one another, and lasting till they lost themselves against or under the thick scum. 4. The motions of this odd liquor were not only various, but frequently vortical; to be satisfied of which, I sometimes put short bits of straw, or fragments of some such like stuff, upon the discovered part of the surface of the liquor, by which they were carried toward very distant, if not opposite, parts of the vessel at the same time. But to make the vortical motion more evident, I several times detached considerably large pieces of the thick scum from the rest of the body, and had the pleasure to see them move both « Beprinted from the Scientific American, 1870-71. Figs. 18 And ...
Título: Scientific American Volume 44; Supplement
Condición del libro: Good
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