THREE RECENTLY PATENTED NOVELTIES. BEAT OF A PENDULUM. REPAIRING A BROKEN SHAFT AT SEA. THE SHAFT REPAIRED. The Charleston Exposition. Harvesting Extraordinary. A SIMPLE AND EFFICIENT CLIPPER GRINDER AND SURFACE GRINDER. THE VAN BENSCHOTEN CLIPPER GRINDER. The Current Su pplement. Contents. column 5, scientific american, 1901-02-23
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