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Improvements in Machinery for Tonguing and Grooving - p153
doi:10.1038/scientificamerican02021850-153b
Passengers' Baggage and Railroad Regulations - p154
doi:10.1038/scientificamerican02021850-154b
For Early Risers-Repeating and Alarm Clock - p156
doi:10.1038/scientificamerican02021850-156
Melsen's Process of Sugar Making Introduced into America - p156
doi:10.1038/scientificamerican02021850-156g
New York Institute of Civil Engineers - p157
doi:10.1038/scientificamerican02021850-157d
New York State Agricultural Society Prizes - p157
doi:10.1038/scientificamerican02021850-157e
On Tanning Leather.—Preparatlon of Hides - p160
doi:10.1038/scientificamerican02021850-160
History of Propellers and Steam Navigation - p160
doi:10.1038/scientificamerican02021850-160a
