ARSENIC IN THE ARTS.--A Lecture before the Medical Association of Central New York. By S.A. Lattimore, LL.D., Professor of Chemistry in the Rochester University. A popular and important paper. SCIENTIFIC AMERICAN SUPPLEMENT No. 29. Price, 10 cents. To be had at this office and of all newsdealers. * * * * * A NEW DEPARTURE. Traveling and local salesmen wanted. STAPLE GOODS. NO PEDDLING. Salary $75 a month. Hotel and traveling expenses paid, S.A. GRANT & CO., manufacturers of ENVELOPES and PAPER. 2,4, 6, and 8 Home St., CINCINNATI, OHIO. * * * * * $66 a Week in your own town. Terms and $5 outfit free. H. HALLETT & CO., Portland, Maine. * * * * * MESSRS. B. DAMBACHER & CO., Hamburg, Germany dealers in American Wood-Working Machinery and Tools of all kinds. Messrt. D. & Co., solicit consignments from American manufacturers. Catalogues and descriptive circulars desired, by mail. * * * * * MACHINERY OF EVERY DESCRIPTION, COLD ROLLED SHAFTING, HANGERS, PULLEYS, COUPLINGS, BELTING, TANITE EMERY WHEELS AND GRINDERS, IN STOCK. GEORGE PLACE, 121 Chambers & 103 Reade Sts., New York City. * * * * * $10 to $500 INVESTED IN WALL ST. Often leads to wealth. A 72 page book explaining everything, and a copy of the Wall Street Review, sent free. JOHN HICKLING & CO., Bankers and Brokers 72 Broadway, New York * * * * * WE ENAMEL in FINE JET BLACK every variety of turned woodwork parts of machinery, casting's, tinware and other metalwork, ENAMELED JET GOODS, in wood or metal, made to order. AMERICAN ENAMEL CO. 17 WARREN ST., PROVIDENCE, R.I. * * * * * A GIFT By an arrangement with the Publisher we will send every reader of this Paper a sample package of Transfer Pictures free. Send 3c. stamp for postage. They are highly colored, beautiful, and easily transferred to any object. Agents wanted. J.L. PATTEN & CO., 162 William St., New York. * * * * * FLOWERS _Strong Plants_ delivered, _free of cost_ safely per mail at your door. Satisfaction guaranteed. Splendid assortment of ROSES 6 for $1; 13 for $2. Send for _New Catalogue of Plants._ HOOPES, BRO. & THOMAS, Cherry Hill Nurseries. West Chester. Pa. * * * * * SHAFTS. PULLEYS. HANGERS COUPLINGS ETC. In Stock, and for Sale by WILLIAM SELLERS & CO., Philadelphia, and 79 Liberty St., New York. Price lists and pamphlets on application. * * * * * WANTED Salesmen to sell light hardware to _Dealers,_ NO PEDDLING. Salary, $1,200 a year. Hotel and traveling expenses paid. Address DEFIANCE M'F'G CO., Chicago, Ill. * * * * * [Illustration] BARNES FOOT POWER MACHINERY.