Secretary Evarts on American Industries. NEW IRON FENCE POST. CARPENTER'S IMPROVED FENCE POST. A Vegetable Curiosity. Arsenic in Paper Collars. The July Product of Petroleum. Retouching Varnish. Olives in Californiq. Rat and Mice Exterminator. Transparency of Metals., scientific american, 1879-09-06
Secretary Evarts on American Industries. NEW IRON FENCE POST. CARPENTER'S IMPROVED FENCE POST. A Vegetable Curiosity. Arsenic in Paper Collars. The July Product of Petroleum. Retouching Varnish. Olives in Californiq. Rat and Mice Exterminator. Transparency of Metals., scientific american, 1879-09-06
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