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Circular Saw without an Arbor, and Improvement in Teeth of Circular Saws - p201
doi:10.1038/scientificamerican03121853-201a
Machinery and Tools as the are—Rolling Presses - p203
doi:10.1038/scientificamerican03121853-203
Spots on the Sun and Magnetic Variations - p203
doi:10.1038/scientificamerican03121853-203c
Stuart's Naval and Mail Steamers of the United States - p205
doi:10.1038/scientificamerican03121853-205d
Riddle's Report of the Great Exhibition - p206
doi:10.1038/scientificamerican03121853-206c
Ericsson on “the Ericsson;” Stirling on “Stirling” - p208
doi:10.1038/scientificamerican03121853-208