Improve the Channelways - p2

doi:10.1038/scientificamerican01021886-2

PDF (338 KB)

The Bell Telephone Case - p2

doi:10.1038/scientificamerican01021886-2a

PDF (338 KB)

Night Sky.—December and January - p3

Richard A. Proctor

doi:10.1038/scientificamerican01021886-3

PDF (311 KB)

Fire Escape Ladder - p4

doi:10.1038/scientificamerican01021886-4

PDF (271 KB)

Improved Square - p4

doi:10.1038/scientificamerican01021886-4a

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Farm Fence Post - p4

doi:10.1038/scientificamerican01021886-4b

PDF (271 KB)

A Separator to Remove Impurities from Wheat - p4

doi:10.1038/scientificamerican01021886-4c

PDF (271 KB)

Automatic Discharger for Evaporating Pans - p4

doi:10.1038/scientificamerican01021886-4d

PDF (271 KB)

Improved Motor - p5

doi:10.1038/scientificamerican01021886-5

PDF (334 KB)

The Jarman Ice Machine - p5

doi:10.1038/scientificamerican01021886-5a

PDF (334 KB)

Improved Grinding Mill - p5

doi:10.1038/scientificamerican01021886-5b

PDF (334 KB)

Hydraulic Machinery for Operating a Drawbridge - p6

doi:10.1038/scientificamerican01021886-6

PDF (788 KB)

Vertical Flour Mill Engines - pp8 - 9

doi:10.1038/scientificamerican01021886-8

PDF (642 KB)

Electricity at the Salpetriere - p9

doi:10.1038/scientificamerican01021886-9

PDF (291 KB)

Engineering Inventions - p10

doi:10.1038/scientificamerican01021886-10

PDF (283 KB)

Agricultural Inventions - p10

doi:10.1038/scientificamerican01021886-10a

PDF (283 KB)

Miscellaneous Inventions - p10

doi:10.1038/scientificamerican01021886-10b

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