Table of contents

Waiting and Watching - p1

doi:10.1038/scientificamerican09231849-1a

Ely's Railway Station Index - p1

doi:10.1038/scientificamerican09231849-1b

The Ogdensburg Railroad - p1

doi:10.1038/scientificamerican09231849-1c

Vermont Central Rail Road - p1

doi:10.1038/scientificamerican09231849-1d

Georgia Rail Road - p1

doi:10.1038/scientificamerican09231849-1e

Railways in England - p1

doi:10.1038/scientificamerican09231849-1f

A Great Rope - p1

doi:10.1038/scientificamerican09231849-1g

Another Diving Bell - p1

doi:10.1038/scientificamerican09231849-1h

Gold, Gold - p2

doi:10.1038/scientificamerican09231849-2

Another Gold Mine - p2

doi:10.1038/scientificamerican09231849-2a

Copperas a Disinfectant - p2

doi:10.1038/scientificamerican09231849-2b

Turnip Meal - p2

doi:10.1038/scientificamerican09231849-2c

New Locomotive Boiler for using Anthracite Coal - p2

doi:10.1038/scientificamerican09231849-2d

Secrets of Ventilation - p2

doi:10.1038/scientificamerican09231849-2f

The Ring of Saturn - p2

doi:10.1038/scientificamerican09231849-2g

Quince Marmalade - p2

doi:10.1038/scientificamerican09231849-2h

Irish Trade since the Union - p2

doi:10.1038/scientificamerican09231849-2i

Chinese Barber - p2

doi:10.1038/scientificamerican09231849-2j

Chalk in the United States - p2

doi:10.1038/scientificamerican09231849-2k

Salt Water and Fresh - p2

doi:10.1038/scientificamerican09231849-2l

Optical Illusions - p2

doi:10.1038/scientificamerican09231849-2m

Mercury - p2

doi:10.1038/scientificamerican09231849-2n

Hydrophobia—Important Theory - p2

doi:10.1038/scientificamerican09231849-2e

The Dead Sea Expedition - p3

doi:10.1038/scientificamerican09231849-3

Wire Fence - p3

doi:10.1038/scientificamerican09231849-3a

Sympathetic Inks - p3

doi:10.1038/scientificamerican09231849-3b

Animal-Shaped Mounds of Wisconsin - p3

doi:10.1038/scientificamerican09231849-3c

Preserving Fruit - p3

doi:10.1038/scientificamerican09231849-3d

On the Proportion of Nutriment to the Means of Living - p3

doi:10.1038/scientificamerican09231849-3e

Small Critics - p3

doi:10.1038/scientificamerican09231849-3f

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Improved Lifting and Force Pump - p4

doi:10.1038/scientificamerican09231849-4

A New Instrument - p4

doi:10.1038/scientificamerican09231849-4a

Perpetual Motion - p4

doi:10.1038/scientificamerican09231849-4b

An Air Navigator - p4

doi:10.1038/scientificamerican09231849-4c

Prevention of Steam Boiler Explosions - p4

doi:10.1038/scientificamerican09231849-4d

That Engine - p4

doi:10.1038/scientificamerican09231849-4e

The Great Britain - p4

doi:10.1038/scientificamerican09231849-4f

Inventor's Claims - p4

doi:10.1038/scientificamerican09231849-4g

Ditching Machine - p4

doi:10.1038/scientificamerican09231849-4h

Water Wheels - p4

doi:10.1038/scientificamerican09231849-4i

Regulating Motion - p4

doi:10.1038/scientificamerican09231849-4j

Who Shall I get to take out my Patent ? - p4

doi:10.1038/scientificamerican09231849-4k

Progress aad the Press - p5

doi:10.1038/scientificamerican09231849-5

Opposition to Improvements - p5

doi:10.1038/scientificamerican09231849-5a

Copper - p5

doi:10.1038/scientificamerican09231849-5b

Spurgin's Palace Bee Hive - p5

doi:10.1038/scientificamerican09231849-5c

Fair of the Franklin Institute - p5

doi:10.1038/scientificamerican09231849-5d

To Inventors - p5

doi:10.1038/scientificamerican09231849-5e

Boston Water and Lead Pipes - p6

doi:10.1038/scientificamerican09231849-6

Investigation of Science - p6

doi:10.1038/scientificamerican09231849-6a

Theory of Vision - p6

doi:10.1038/scientificamerican09231849-6b

Starch a Cure for Scurvey - p6

doi:10.1038/scientificamerican09231849-6c

Cause of Waves - p6

doi:10.1038/scientificamerican09231849-6d

Pride - p6

doi:10.1038/scientificamerican09231849-6e

To Correspondents - p7

doi:10.1038/scientificamerican09231849-7

Webster's Unabridged Dictionary - p7

doi:10.1038/scientificamerican09231849-7a

Mechanical Principla - p7

doi:10.1038/scientificamerican09231849-7b

Life and Writings of Hogarth - p7

doi:10.1038/scientificamerican09231849-7c

Cliff Copper Mine - p7

doi:10.1038/scientificamerican09231849-7d

Sending Receipts - p7

doi:10.1038/scientificamerican09231849-7e

New Chemical Law - p8

doi:10.1038/scientificamerican09231849-8

History of the Rotary Engine - p8

doi:10.1038/scientificamerican09231849-8a

Test for the purity of Magnesia - p8

doi:10.1038/scientificamerican09231849-8b

Analyses of Milk - p8

doi:10.1038/scientificamerican09231849-8c

Zinc - p8

doi:10.1038/scientificamerican09231849-8d

The Best Mechanical Paper - p8

doi:10.1038/scientificamerican09231849-8e

Zinc - p8

doi:10.1038/scientificamerican09231849-8f

The Best Mechanical Paper - p8

doi:10.1038/scientificamerican09231849-8g