receiving the free end thereof, results obtained, ought to be indicated. main supply through the injector draws alongs with it the as shown. It was agreed that the first experiments be made without | lime water from a small pipe, and the two pass together into gas, and those afterward with a larger… … potable water a second filtering medium of vegetable char- First Experiment.—A leaden cartridge placed in the sec- IMPROVED BALK TIE. coal is added. Mr. A. Durand Claye, director of the labora- ond gallery, which did not contain coal-dust, produced a tory of the Ecole des Ponts et Chaussées, Paris,…
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