Table of contents
May 17, 1862, Volume 6 No 20 (New Series) pp305-320
About the coverNotes and Queries
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Top of pageArticles
Notes on Military and Naval Affairs - pp306 - 307
doi:10.1038/scientificamerican05171862-306
Extension of Patents—For Whose Benefit they are Granted - p313
doi:10.1038/scientificamerican05171862-313
Good Inventions Lost to the Country—Importance of Encouraging Inventors—What Congress Should Do - p313
doi:10.1038/scientificamerican05171862-313b
Recent Foreign Inventions and Discoveries - p315
doi:10.1038/scientificamerican05171862-315
