Table of contents
July 26, 1862, Volume 7 No 4 (New Series) pp49-64
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Improved Anchor Tripper, Interesting Objects in the Exhibition - p49
doi:10.1038/scientificamerican07261862-49
The Handsomest Fire Engine Ever Built - pp51 - 52
doi:10.1038/scientificamerican07261862-51
Petroleum — Experiment to Determine its Comparative Illuminating Power with Gas and Candles - p52
doi:10.1038/scientificamerican07261862-52
Polytechnic Association of the American Institute - p53
doi:10.1038/scientificamerican07261862-53
Iron-Clad Frigates—Bending Their Armor Plates - p57
doi:10.1038/scientificamerican07261862-57
The True Remedy for the Scarcity of Change - p57
doi:10.1038/scientificamerican07261862-57a
Experiments with Working Steam Expansively and with Condensers - pp58 - 59
doi:10.1038/scientificamerican07261862-58a
