alling boats TH E COPYING PAD.—HOW TO MAKE used on the Hudson river in winter. By H.A. Horsfall, Cost of the work. Contained in SCIENVIFIC A MEKICAN and how to use; with an engraving. Practical directions SUPPLEMENT, No. Gu. Price 1 cents. Tobe had at M.E. Contained in SCIENTIFIC AMERICAN SUPPLK-… … Send for copy of Kodak Primer with Kodak Photograph. paper is pub tst.ed weekly. Every number contains six- Wo improving their quality and toughness, WAY tempering Sawa with wonderful effect up- hack-saw blades. [a use over two years in all parts of the country. The new clamps have the edges…
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