Panama Canal Locks to Be Widened - p302

doi:10.1038/scientificamerican11021907-302

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Hoist with Its Own Petard - p302

doi:10.1038/scientificamerican11021907-302a

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The Humanitarian Side of Vivisection - p302

doi:10.1038/scientificamerican11021907-302b

PDF (165 KB)

Shipbuilding in the United States - p302

doi:10.1038/scientificamerican11021907-302c

PDF (165 KB)

Artificial Honey - p303

doi:10.1038/scientificamerican11021907-303a

PDF (257 KB)

The Scientific American Trophy and Medal - p303

doi:10.1038/scientificamerican11021907-303b

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The Crocco and Ricaldoni Hydroplane Boat - p304

doi:10.1038/scientificamerican11021907-304

PDF (299 KB)

Combined Dam and Power Plant - pp305 - 306

doi:10.1038/scientificamerican11021907-305

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The Long Distance Balloon Races from St. Louis - pp308 - 309

doi:10.1038/scientificamerican11021907-308

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A Convenient Pocket Transit - p310

A. Frederick Collins

doi:10.1038/scientificamerican11021907-310

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Natural and Artificial Mixed Colonies of Ants - pp310 - 311

Louis I. Dublin, Ph.D.

doi:10.1038/scientificamerican11021907-310a

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An Interesting Type of Cow Milker - p311

doi:10.1038/scientificamerican11021907-311

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Folding Ironing Table - p311

doi:10.1038/scientificamerican11021907-311a

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Extension Table - p311

doi:10.1038/scientificamerican11021907-311b

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Attachment for Traction-Operated Implements - p311

doi:10.1038/scientificamerican11021907-311c

PDF (233 KB)