A KINDERGARTEN TEACHING DEVICE. 'GALLEGOS' DEVICE TO TEACH ARITHMETIC A MACHINE FOR FINISHING SAWS. GALLEGOS' DEVICE TO TEACH SPELLING An Adhesive Cement. AN IMPROVED BALANCED SLIDE VALVE. A GOLD AND SILVER REPINING ESTABLISHMENT. THE COLUMBIA N EXPOSITION—A GERMAN GOLD AND SILVER REFIN E RY EXHIBIT., scientific american, 1893-08-26
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KINDERGARTEN TEACHING DEVICE, 'GALLEGOS' DEVICE, TEACH ARITHMETIC, MACHINE FOR FINISHING SAWS, GALLEGOS' DEVICE, TEACH SPELLING, Adhesive Cement, IMPROVED BALANCED SLIDE VALVE, GOLD, SILVER REPINING ESTABLISHMENT, COLUMBIA N EXPOSITION—A GERMAN GOLD, SILVER REFIN E RY EXHIBIT, scientific american, 1893-08-26, science, scientific, sciences, mind, health, tech, sustainability, publication, lab, sciam, sa, scientist, research, american, experiment, education, discovery, technology, analysis, magazine, u.s., insights, developments, weekly, broadsheet, inventor, innovation, inventions, patented, industrial revolution, emerging, trends, monthly magazine, united states, engravings, curious works, paper, discover, Scientific Paper, Weekly Journal, Practical Information, Art, Science, Mechanics, Chemistry, Manufactures, research, education, scientist, innovation, 19th century, vintage, america, Rufus M. Porter, 1845, journal, academic, newspaper illustrations, retro style, old-fashioned, media illustrations, victorian style, news, newspaperheadline, 19th century style, illustration, journalism
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