159 Founded by Math&w Carey* 1785. HENRY CARETBAIRD & CO. W. L. DOUGLAS Industrial Publishers. Booksellers, and Importers, Fourteenth Edition of 810 Walnui St.. Philadelphia, Pa.. U. 8. A. CTOur new and Revised Catalogue of Practical and Experimental Science Scientific Books. 88 paves. 8vo, and our… … REVISED AND ENLARGED. What is claimed, is time, saving; no turning of han- 120 Pages and 110 Superb Cuts added. dle to bring laws to the work, STEEL TYPE FOR TYPEWRITERS simply one sliding movement. I The unprecedented sale of this work shows conclu- The screw and nut is not used 1-10 as much as…
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