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Excerpt from A New Gas-Oxygen-Ether Apparatus: Description and Use of the Instrument The Ether Device. - When ether is needed, it is, by the use of a direct thumb control at the top of the ether chamber, caused to be sent through the sight feed drop by drop into the. Electrically heated tunnel, through which all the gases are made to pass in' a sweeping uphill direction, the ether tend ing to run downward against the oncoming stream of gases. This mechanical arrangement assists sub stantially in the vaporizing of the ether. The tun nel has, in general, the course which the letter U would indicate when the latter is placed on its side, thus D; the space between the two limbs of the letter representing a receptacle for a tubular elec tric light which affords ample heat to prevent any freezing tendency of the ether even when being vaporized at therate of 60 to 120 or more drops per minute. This heater can be disconnected inde pendently, and need only be used when rather large amounts of ether are called for. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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