Improved Candle Molds - p129

doi:10.1038/scientificamerican03011862-129

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Combined Writing Case and Checker Board - p129

doi:10.1038/scientificamerican03011862-129a

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Notes on Military and Naval Affairs - pp130 - 131

doi:10.1038/scientificamerican03011862-130

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The Chemistry of Coal - p132

doi:10.1038/scientificamerican03011862-132

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Surface Condensers for Steam Engines - p132

doi:10.1038/scientificamerican03011862-132a

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The Plan of Creation - p133

doi:10.1038/scientificamerican03011862-133

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History of the Heliographic Art in Europe and America - pp135 - 136

M. A. Root

doi:10.1038/scientificamerican03011862-135

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Smith's Patent Nut Cracker - p136

doi:10.1038/scientificamerican03011862-136

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What Can be Done for Inventors—Advice Gratis and Advice for Pay - p137

doi:10.1038/scientificamerican03011862-137

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The Proposed New Iron Gunboats - p137

doi:10.1038/scientificamerican03011862-137a

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Agassiz as a Lecturer - p137

doi:10.1038/scientificamerican03011862-137b

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The Inventor and the National Crisis - p138

doi:10.1038/scientificamerican03011862-138

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Our Iron-Clad River Boats in Battle - p138

doi:10.1038/scientificamerican03011862-138a

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Agassiz on the Existence of God - p138

doi:10.1038/scientificamerican03011862-138b

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Hours of Study - p138

doi:10.1038/scientificamerican03011862-138c

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Cartridges—Their History - p139

doi:10.1038/scientificamerican03011862-139

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Notes on Foreign Inventions and Discoveries - p140

doi:10.1038/scientificamerican03011862-140

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Recent American Inventions - p140

doi:10.1038/scientificamerican03011862-140a

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Patent Claims - pp140 - 142

doi:10.1038/scientificamerican03011862-140b

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