Table of contents
April 13, 1861, Volume 4 No 15 (New Series) pp225-240
About the coverNotes and Queries
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Report of the Experiments with the Turbine Water Wheels at Philadelphia - pp225 - 228
doi:10.1038/scientificamerican04131861-225
The Commissioner of Patents—New Examiners &c - p233
doi:10.1038/scientificamerican04131861-233a
Can the Rifling of Guns be Dispensed With - pp233 - 234
doi:10.1038/scientificamerican04131861-233b
Wealth—A Review of the Subject - pp234 - 235
doi:10.1038/scientificamerican04131861-234
The Polytechnic Association of the American Institute - p235
doi:10.1038/scientificamerican04131861-235
Hale's Mode of Impelling Shot and Shell - p240
doi:10.1038/scientificamerican04131861-240a
