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A Very Fast Steam Launch

By Paddlefast

Raising Sunken Vessels

On a Practical Method of Raising Sunken Vessels *

By Latimer Clark

Corrosion of Propellers

Propeller and Propeller Shaft of the “Thetis ”

Pump Propulsion

On Steam Boilers and Engines for High Pressures

By Loftus Perking

Improved Ship's Anchor

An Improved Squeezer

By Jeremiah Head

Another Atlantic Cable

Bicycling

Horseshoeing

Spontaneous Combustion

By Charles W. Vincent

Aerial Telegraphy

Flash-Signals

By D. Bruce Peebles

New Theory of Microscopic Vision

Observations on Professor Abbe's Experiments illustrating his Theory of Microscopic Vision

By J. W. Stephenson

Oxide of Zinc in Diarrhœa

Pus in Hospitals

The Effect of Inaudible Vibrations Upon Sensitive Flames

Explanation of Plate

The Microscopic Anatomy of Vaccination

Cure for Prickly Heat

A New Theory of the Origin of Typhoid Fever

Elimination of Lead in Saturnine Paralysis

Jaundice from Pork and Beans

Singular Example of Lead Poisoning

A New Discoverer of Anæsthesia

Skin Grafting

Deafness

Cause of Pain

On the Relative Ages of the Sun and Certain of the Fixed Stars

Read before the American Philosophical Society, April 6, 1877

By Daniel Kirkwood

The Body in Extreme Age

On Catastrophism

By Clarence King

Building Materials Produced in Maine

Lithographic Stone Supply

Chromium

English Bank Notes

The Guadalupe Mine

Cryolite and its Uses

Pencils of Silver Nitrate

Phyllocyanin as a Reagent

Preparation and use in Casting Steel of Alloys of Silicon and Manganese

By Sergius Kern

On the Metals Which Accompany Iron

By M. A. Terreil

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