Table of contents
April 2, 1864, Volume 10 No 14 (New Series) pp209-224
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The Most Important American Discoveries and Inventions - pp210 - 211
doi:10.1038/scientificamerican04021864-210
Polytechnic Association of the American Institute - p212
doi:10.1038/scientificamerican04021864-212
New Experiments in Working Steam Expansively - pp212 - 213
doi:10.1038/scientificamerican04021864-212a
Patents Granted for Seventeen Years! - pp221 - 222
doi:10.1038/scientificamerican04021864-221a
The Cheapest Mode of Introducing Inventions - p223
doi:10.1038/scientificamerican04021864-223
