A Decision Under the German-American Patent Treaty - p406

doi:10.1038/scientificamerican12041909-406

PDF (177 KB)

The Cherry Mine Disaster - p406

doi:10.1038/scientificamerican12041909-406a

PDF (177 KB)

High and Cross-Country Flying Abroad - p406

doi:10.1038/scientificamerican12041909-406b

PDF (177 KB)

Engineering - p407

doi:10.1038/scientificamerican12041909-407

PDF (123 KB)

Electricity - p407

doi:10.1038/scientificamerican12041909-407a

PDF (123 KB)

Science - p407

doi:10.1038/scientificamerican12041909-407b

PDF (456 KB)

Some Photographic Diversions - pp409 - 410

Gustave Michaud

doi:10.1038/scientificamerican12041909-409

PDF (451 KB)

How Does Sap Run in Pine Trees? - p410

doi:10.1038/scientificamerican12041909-410a

PDF (121 KB)

Safeguarding Mines - p410

doi:10.1038/scientificamerican12041909-410b

PDF (121 KB)

An Early Marine Engine - p410

doi:10.1038/scientificamerican12041909-410c

PDF (121 KB)

A Novel Aerial Railway - p411

doi:10.1038/scientificamerican12041909-411

PDF (146 KB)

How to Observe and Record the Weather - p412

Thaleon Blake, C.E.

doi:10.1038/scientificamerican12041909-412

PDF (1,818 KB)

Testing the Man-Engine - p413

John Elfreth Watkins

doi:10.1038/scientificamerican12041909-413

PDF (2,272 KB)

Curiosities in Science and Invention - p415

doi:10.1038/scientificamerican12041909-415

PDF (308 KB)

The Ice Drag of the Wellman Expedition - p415

doi:10.1038/scientificamerican12041909-415a

PDF (308 KB)

An Early Type of Submarine Boat - p415

doi:10.1038/scientificamerican12041909-415b

PDF (308 KB)

Coin-Operated Device for Registering Letters - p415

doi:10.1038/scientificamerican12041909-415c

PDF (308 KB)

The Great Stone Globe at Swanage - p415

doi:10.1038/scientificamerican12041909-415d

PDF (308 KB)

Spray Helmet for Firemen - p415

doi:10.1038/scientificamerican12041909-415e

PDF (308 KB)

Indoor Bed Tents - p416

Katherine Louise Smith

doi:10.1038/scientificamerican12041909-416

PDF (830 KB)

An Emergency Oxygen Cup for Miners - p416

Frederic B. Hyde

doi:10.1038/scientificamerican12041909-416a

PDF (216 KB)