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Departments

Correspondence

Correspondence p374

doi:10.1038/scientificamerican06141862-374


Notes and Queries

Notes and Queries p382

doi:10.1038/scientificamerican06141862-382


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Articles

Hammer for Making Iron Plates, Strength of Franklinite Iron p369

doi:10.1038/scientificamerican06141862-369


Philadelphia Water Works—Jonval Wheels p369

doi:10.1038/scientificamerican06141862-369a


Notes on Military and Naval Affairs pp370 - 371

doi:10.1038/scientificamerican06141862-370


Polytechnic Association of the American Institute pp372 - 373

doi:10.1038/scientificamerican06141862-372


Colburn's Protector and Reflector for Glass-Lamp Chimneys p373

doi:10.1038/scientificamerican06141862-373


Rats pp375 - 376

doi:10.1038/scientificamerican06141862-375


The Troy Fire and Iron-Proof Safes p377

doi:10.1038/scientificamerican06141862-377


Inventors Loyal p377

doi:10.1038/scientificamerican06141862-377a


Employment of Females in Industrial Operations p377

doi:10.1038/scientificamerican06141862-377b


Progress of Our Iron-Clad Fleet p377

doi:10.1038/scientificamerican06141862-377c


Capt Norton and The Scientific American p377

doi:10.1038/scientificamerican06141862-377d


The New Iron Steamer “Scotia” pp377 - 378

doi:10.1038/scientificamerican06141862-377e


Recent American Inventions p378

doi:10.1038/scientificamerican06141862-378


Giffard's Injectors—The Machine Business in Philadelphia pp378 - 379

doi:10.1038/scientificamerican06141862-378a


Patent Claims pp380 - 382

doi:10.1038/scientificamerican06141862-380


To Our Readers pp382 - 384

doi:10.1038/scientificamerican06141862-382a


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