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New and Important Hydraulic Invention - p332
doi:10.1038/scientificamerican07101847-332
Improvement in Reaction Water Wheels - p332
doi:10.1038/scientificamerican07101847-332f
Great Improvement in Iron Manufacture - p332
doi:10.1038/scientificamerican07101847-332i
Agriculture and Horse Power Machines - p333
O. Badger, By
doi:10.1038/scientificamerican07101847-333a
Manufactures of Providence, Rhode Island - p334
doi:10.1038/scientificamerican07101847-334h