Some Theories Verified - p254

doi:10.1038/scientificamerican10171908-254

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Langley—A Tribute - p254

doi:10.1038/scientificamerican10171908-254a

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Wanted: A Sanitary Railway Car - p254

doi:10.1038/scientificamerican10171908-254b

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Engineering - p255

doi:10.1038/scientificamerican10171908-255

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Electricity - p255

doi:10.1038/scientificamerican10171908-255a

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Science - p255

doi:10.1038/scientificamerican10171908-255b

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The Eyes of Plants - p256

doi:10.1038/scientificamerican10171908-256

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A New Ice-Making Machine for Domestic Use - p257

doi:10.1038/scientificamerican10171908-257

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A Rescue Training School and Experimental Gallery for Miners - pp260 - 261

doi:10.1038/scientificamerican10171908-260

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New Fossil Wonders from the Fayum of Egypt - pp261 - 262

Walter L. Beasley

doi:10.1038/scientificamerican10171908-261

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Polishing the great Cullinan Diamond - p262

doi:10.1038/scientificamerican10171908-262

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Handy Man's Workshop - pp263 - 264

doi:10.1038/scientificamerican10171908-263

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A Simple Method for Making a Coiled Spring - p264

A. Fagan

doi:10.1038/scientificamerican10171908-264

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A Home-Made Wimshurst Machine - p264

John R. Allen

doi:10.1038/scientificamerican10171908-264a

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A Blacksmith's Napkin Ring - p264

doi:10.1038/scientificamerican10171908-264b

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An Unbreakable Leyden Jar - p264

doi:10.1038/scientificamerican10171908-264c

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A Simple Foot-Power Compound Grinder - p264

A. E. Osborn

doi:10.1038/scientificamerican10171908-264d

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