gravings of new inventions and discoveries, figures. Contained in SCIENTIFIC AMERICAN SUPPLK- MANUFACTURERS, the best. None genuine unless stamped on bottom representing Engineering Works, Steam Machinery, To be had at this! Philadelphia and Chicago, MENT No. 615. Price ten cents. “W. L. Douglas $3… … applied by unskilled workmen, and costs only about half as muchastin. Samples .—_ THeE and descriptive price list free by mail. H. W. JOHNS MFG. CO., 87 Maiden Lane, N. Y. Scientific American Supplement. Chicago. Philadelphia. London. This is a separate and distinct publication from Sole…
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