* * * * * Inside Page, each insertion - - - 75 cents a line. Back Page, each insertion - - - - $1.00 a line. (About eight words to a line.) _Engravings may head advertisements at the same rate per line, by measurement, as the letter press. Advertisements must be received at publication office as early as Thursday morning to appear in next issue._ * * * * * BAIRD'S CATALOGUES OF BOOKS Our new and enlarged CATALOGUE OF PRACTICAL AND SCIENTIFIC BOOKS, 96 pages, 8vo; a Catalogue of Books on DYEING, CALICO PRINTING, WEAVING, COTTON and WOOLEN MANUFACTURE, 4to; Catalogue of a choice collection of PRACTICAL, SCIENTIFIC, and ECONOMIC BOOKS, 4to; List of Books on STEAM AND THE STEAM ENGINE, MECHANICS, MACHINERY, and ENGINEERING, 4to; List of Important Books on METALLURGY, METALS, STRENGTH OF MATERIALS, CHEMICAL ANALYSIS, ASSAYING, etc., 4to; two Catalogues of Books and Pamphlets on SOCIAL SCIENCE, POLITICAL ECONOMY, BANKS, POPULATION, PAUPERISM, and kindred subjects sent free to any one who will forward his address. HENRY CAREY BAIRD & CO., Industrial Publishers, Booksellers, and Importers, 810 WALNUT ST., PHILADELPHIA, PA. [Illustration] An engine that works without Boiler. Always ready to be started and to give at once full power. SAFETY, ECONOMY, CONVENIENCE. Burns common Gas and Air. No steam, no coal, no ashes, no fires, no danger, no extra insurance. Almost no attendance. THE NEW OTTO SILENT GAS ENGINE. Useful for all work of small stationary steam engine. Offered in sizes of 2, 4, and 7 H.P. Send for illustrated circular. SCHLEICHER, SCHUMM & CO., Phila., Pa. * * * * * A GOOD PLAN _The most profitable plan_ for operating in stocks is by uniting capital of various sums in combining or pooling orders of thousands of customers and using them as _one mighty whole_, which is done so successfully by Messrs. Lawrence & Co., Bankers, 57 Exchange Place, N. Y. City. By this cooperative system each investor is placed on an equal footing with the largest operator and profits divided _pro rata_ among shareholders every 30 days. $10 invested makes $50 or 5 per cent. on the stock during the month--$50 returns $350 or 7 per cent., $100 pays $1,000, or 10 per cent., and so on according to the market. The firm's new circular (copyrighted and free) contains "Two unerring rules for success in stock operations," and explains everything. All kinds of Stocks and Bonds wanted. New Government Loan supplied. LAWRENCE & CO., _Bankers and Brokers_, 57 Exchange Place, N. Y. City. * * * * * PORTABLE GRAIN MILLS. [Illustration] For Mill and Farm. Built on the durable and scientific principles. Warranted fully equal to any in the market. Mills for grinding all substances. We have made mill building a specialty for 13 years. WALKER BROS. & CO., Engineers, Founders & Machinists, 23d and Wood St., Phila., Pa.