The Electric Club - p127

doi:10.1038/scientificamerican03031888-127

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Position of the Planets in March - p129

doi:10.1038/scientificamerican03031888-129

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Photographic Notes - p129

doi:10.1038/scientificamerican03031888-129a

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The Pere La Chaise Crematory - p130

doi:10.1038/scientificamerican03031888-130

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An Improved Level and Inclinometer - p131

doi:10.1038/scientificamerican03031888-131

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A Machine for Grinding Circular Knives - p131

doi:10.1038/scientificamerican03031888-131a

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An Improved Car Coupling - p131

doi:10.1038/scientificamerican03031888-131b

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A Portable Vapor and Hot Air Bath Apparatus - p131

doi:10.1038/scientificamerican03031888-131c

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The Hargreaves Thermo-Motor - p134

doi:10.1038/scientificamerican03031888-134

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A Live Gorilla in London - pp135 - 136

doi:10.1038/scientificamerican03031888-135

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Apparatus for Illustrating Newton's Laws - p137

T. O'conor Sloane, Ph.D.

doi:10.1038/scientificamerican03031888-137

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A Machine for Weighing, Registering, and Bagging Grain - p137

doi:10.1038/scientificamerican03031888-137a

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Engineering Inventions - p138

doi:10.1038/scientificamerican03031888-138

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Miscellaneous Inventions - p138

doi:10.1038/scientificamerican03031888-138a

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