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Machinery and Tools as they are.—Saws and Saw Mills - p179
doi:10.1038/scientificamerican02191853-179
The India Rubber Case Again—Extension of the Patent - p181
doi:10.1038/scientificamerican02191853-181
Inventors of Washing Machines to the Rescue - p181
doi:10.1038/scientificamerican02191853-181d
Riddle's Report of the Great Exhibition - p182
doi:10.1038/scientificamerican02191853-182a
