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Machine for Covering the Heads of Nails - p108
doi:10.1038/scientificamerican12111858-108
Honored in the Observance but not in the Breach - p108
doi:10.1038/scientificamerican12111858-108c
The Winans Steamer—Our Answer to the Builders' Communication - pp109 - 110
doi:10.1038/scientificamerican12111858-109d
Notes on the Progress of the Paddle and Screw.—No. 4 - p112
doi:10.1038/scientificamerican12111858-112