he Double Chloride of Gold Reme- nearly 700 wood engravings. 2 vols. 8vo, . $7.50 dy. Books free. Leslie E. Keeley, M.D., Surgeon H. HOOTER, Phila., Pa C. & A. R. R., Dwight, 111., U. S. A. This treatise is particularly full and valuable on the sub- ject of the Chemistry of the Metals.… … Warn.—The Sheet Metal Worker's Instructor. For Zinc, Engines a complete success. ON 30 DAYS' TRIAL! Sheet Iron, Copper, and Tin Plate Workers, etc. Con- Horizontal Steam Engines, Prices still 40 per cent, below taining a selection of Geometrical Problems; also, those of other makers. Un- Practical…
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