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Sub-Marine Telegraph Under the Atlantic - p179
doi:10.1038/scientificamerican02221851-179b
Evaporation and Condensation in Engines - p179
doi:10.1038/scientificamerican02221851-179d
Improvement in Tinsmiths' Wiring Machines - p180
doi:10.1038/scientificamerican02221851-180d
Improvement in Tanning and the Treatment of Hides - p181
doi:10.1038/scientificamerican02221851-181b
Great Cave Discovered in Indiana - pp181 - 182
doi:10.1038/scientificamerican02221851-181c
Mr. Burke and the Reform of the Patent Laws - p182
doi:10.1038/scientificamerican02221851-182
