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Brown's Eccentric Progressive Power Press - p313
doi:10.1038/scientificamerican06221850-313d
Poison Balls for Rats and Roaches, and other Vermin - p313
doi:10.1038/scientificamerican06221850-313e
To Purify Covered Wells from Foul Air - p313
doi:10.1038/scientificamerican06221850-313f
A Valuable Invention for Carding Wool - p316
doi:10.1038/scientificamerican06221850-316b
Patent Office, and Reform of the Patent Laws - p317
doi:10.1038/scientificamerican06221850-317
Petition for the Extension of a Patent - p318
doi:10.1038/scientificamerican06221850-318a
New Agents for the Scientific American - p319
doi:10.1038/scientificamerican06221850-319a
History of Propellers and Steam Navigation - p320
doi:10.1038/scientificamerican06221850-320a
