Ratification of the Panama Canal Treaty - p220

doi:10.1038/scientificamerican03281903-220

PDF (160 KB)

A Sign of the Times - p220

doi:10.1038/scientificamerican03281903-220a

PDF (160 KB)

Rise of Water Power in Electrical Supply - p220

Alton D. Adams

doi:10.1038/scientificamerican03281903-220b

PDF (160 KB)

The Latest Edison Storage Battery Patent - p221

doi:10.1038/scientificamerican03281903-221

PDF (111 KB)

The Heavens in April - p221

Henry Norris Russell, Ph.D.

doi:10.1038/scientificamerican03281903-221a

PDF (111 KB)

Vessels Made from Quartz and Some of their Uses - p222

John Trowbridge, Prof.

doi:10.1038/scientificamerican03281903-222

PDF (223 KB)

A Mechanical Street Cleaner - pp222 - 223

doi:10.1038/scientificamerican03281903-222a

PDF (417 KB)

Electricity in Modern Mining Drainage Installations - pp223 - 224

Frank C. Perkins

doi:10.1038/scientificamerican03281903-223

PDF (2,162 KB)

American Railway Slaughters and British Railway Safety - pp226 - 227

Frederick Moore

doi:10.1038/scientificamerican03281903-226

PDF (536 KB)

A New Sighting Gear for Naval Guns and Gunnery Signaling Apparatus - pp227 - 228

doi:10.1038/scientificamerican03281903-227

PDF (323 KB)

Self-Sealing Moth Bag - p230

doi:10.1038/scientificamerican03281903-230

PDF (248 KB)

Safety Envelop - p230

doi:10.1038/scientificamerican03281903-230a

PDF (248 KB)

Student's Chair - p230

doi:10.1038/scientificamerican03281903-230b

PDF (248 KB)

Safety Car Step - p230

doi:10.1038/scientificamerican03281903-230c

PDF (248 KB)