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Important Discovery that may Lead to Improvements of Great Value - p123
doi:10.1038/scientificamerican01051850-123
New Plan for Opening and Closing large Window Shutters and Doors of Stores and Public Buildings - p124
doi:10.1038/scientificamerican01051850-124a
On Tanning Leather-Preparation of Hides - p128
doi:10.1038/scientificamerican01051850-128
History of Propellers and Steam Navigation - p128
doi:10.1038/scientificamerican01051850-128a
