Table of contents
Recently Patented Inventions
Business and Personal
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Interesting Exhibits at the American Institute Fair - pp256 - 258
doi:10.1038/scientificamerican10251890-256a
M. Palacio's Design for a Colossal Monument in Memory of Christopher Columbus - p260
doi:10.1038/scientificamerican10251890-260
Experimental Plant of the Portelectric System - pp263 - 264
doi:10.1038/scientificamerican10251890-263