Satisfaction guaranteed. Send for circular to The CLEVELAND STONT CO. ENTIFIC AMERICAN, June 4, 1892. AUTOMATIC TRUMPET .—Any tune played on From the German of Sigmund Lehner, Chemist and 2d Floor, Wilshire, Cleveland, 0. Blanutacturers by William T. Brannt. 12mo, 230 pages. J. W. QUEEN & CO.,… … ies in Chemical Technology,and their Practical Appli- Educational =. TNE PRATT & WHITNEY GO. cation in the Arts and Industries. Edited by William Views. T,. Brannt and W.H. Wahl, Ph.D. 78 engravings, 495 pages, 2mo Price 2.00 J. B. COLT & CO., 16 Beekman St., N. Y., and 189 La Salle St., Chicago,…
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