ed. Pinions, similar attempt was the one made by Dr. C. W. Stearns, upon the lower end of the valve seat, C, and set at such d d, mesh into the gears in the wheel, G, and these surgeon (now of this city), who went to London about a point that sufficient gas at a proper pressure may enter to supply… … arrangements. this city. An advertise- The patent for this in- ment in relation to this in- ciple and Practice of Dental Surgery"), who seems vention was procured (through the Scientific American vention may be found on another page of our paper. Patent Agency), on March 13, 1860; and further…
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