Moving a Bridge by Rail - p193

doi:10.1038/scientificamerican04011893-193

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The Legal Status of Railroad Employes - p194

doi:10.1038/scientificamerican04011893-194

PDF (384 KB)

Position of the Planets in April - p195

doi:10.1038/scientificamerican04011893-195

PDF (123 KB)

An Improved Camera Lucida - p196

doi:10.1038/scientificamerican04011893-196

PDF (321 KB)

A Recent Improvement in Buckles - p196

doi:10.1038/scientificamerican04011893-196a

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An Improved Car Axle Box - p196

doi:10.1038/scientificamerican04011893-196b

PDF (321 KB)

An Independent Lathe Chuck - p196

doi:10.1038/scientificamerican04011893-196c

PDF (321 KB)

Improved Rubber Toys - p197

doi:10.1038/scientificamerican04011893-197

PDF (235 KB)

The Oldest Musical Instruments - p197

doi:10.1038/scientificamerican04011893-197a

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An Improved Harrow - p197

doi:10.1038/scientificamerican04011893-197b

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A Tellurian for the Home and School - pp197 - 198

doi:10.1038/scientificamerican04011893-197c

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An Electric Heater for Cars - p198

doi:10.1038/scientificamerican04011893-198

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The Telautograph - p198

doi:10.1038/scientificamerican04011893-198a

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Factory Driving by Electricity - pp200 - 202

doi:10.1038/scientificamerican04011893-200

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Dust and Sand Figures on Membranes - p202

T. O'conor Sloane, Ph.D.

doi:10.1038/scientificamerican04011893-202

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The New Steel Steamer El Rio - p202

doi:10.1038/scientificamerican04011893-202a

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To Inventors - p205

doi:10.1038/scientificamerican04011893-205

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