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Scouring Castings of Iron.—Coating with Zinc - p57
doi:10.1038/scientificamerican11031855-57
The Patent Office once More-Defence of the Secretary of the Interior - p58
doi:10.1038/scientificamerican11031855-58
Important to Mechanics.—Woodworth's Planning Machine - p60
doi:10.1038/scientificamerican11031855-60
Reminiscences of the Paris Industrial Exhibition No. 4 - p61
doi:10.1038/scientificamerican11031855-61a
