Table of contents
May 31, 1862, Volume 6 No 22 (New Series) pp337-352
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Notes on Military and Naval Affairs - pp338 - 340
doi:10.1038/scientificamerican05311862-338
Polytechnic Association of the American Institute - p341
doi:10.1038/scientificamerican05311862-341
Extension of Patents—For Whose Benefit they are Granted - p345
doi:10.1038/scientificamerican05311862-345
Proposed Amendments to the Canada Patent Law System - p345
doi:10.1038/scientificamerican05311862-345b
The Great Troy Fire—Iron Safes Destroyed - p345
doi:10.1038/scientificamerican05311862-345c
General Totten on the Ship and Fort Question - pp345 - 346
doi:10.1038/scientificamerican05311862-345d
The Way the Gold Deposits of California were Formed - p346
doi:10.1038/scientificamerican05311862-346
