Table of contents
March 24, 1860, Volume 2 No 13 (New Series) pp193-208
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The Obstruction to the Navigation of Rivers Caused by the Piers of Bridges - p194
J. W. Sprague
doi:10.1038/scientificamerican03241860-194
Polytechnic Association of the American Institute - p195
doi:10.1038/scientificamerican03241860-195
Shaw's Shade-Supporters or Shade Clasps for Lamps - p196
doi:10.1038/scientificamerican03241860-196
Economy of Anthracite Coal for Locomotives - p197
doi:10.1038/scientificamerican03241860-197
Yarbrough's Improvement in Dressing Millstones - p197
doi:10.1038/scientificamerican03241860-197b
Belts for Driving Machinery—Which Side is Best? - pp197 - 198
doi:10.1038/scientificamerican03241860-197c
A Simple Apparatus for Illustrating the Precession of the Equinoxes - p200
doi:10.1038/scientificamerican03241860-200a
Health of Trades and Professions; Labor-Saving Machinery - p201
doi:10.1038/scientificamerican03241860-201