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Features

New Stern-Wheel Steamers

The Ferry Steamer Loftus Perkins.— Boiler Pressure 450 LB. Per Inch

Oscillation and Vibration of Mill Buildings

Tweddell's Hydraulic Capstan and Windlass

When is a Safety Valve not a Safety Valve?

New Temple at Moscow

Smoke Consumer

A New Werdermann Electric Lamp

Telegraph Wires in Cities

A New Phonograph

Recent Wonders of Sound

A recent lecture before the Society of Arts, London,

By W. H. Preece

Magnetic Reactions

By Th. Du Moncel

New Process for Photographic Prints

By M. A. Poitevin

The Spectroscope in Solar Work

Photo-Engraving Process for Surface Printing

By Henry Knight

How to make Lager Beer

A Gelatine Filter

Sulphite of Soda in Malarial Fevers

By L. Austin Porter

Disinfectants

Experiments designed to test the value of certain gaseous and volatile disinfectants.

By George W. Sternberg

How to Apply the Hot Water Vaginal Douche

Successful Case of Cholecystotomy

The Ear

Uninterrupted Wearing of Cotton Pellets as Artificial Drum-Heads

By Charles Henry Burnett

Hypodermic Injection of Ether in Sciatica

On the Noxious Action of Acid Vapors on Vegetation

By G. Lunge

Microscopic Organisms

By M. Pasteur

The Effects of a Fixed Idea

The Gorilla and Chimpanzee at the London Crystal Palace

Telling a Horse's Age

What the Chipmunk does with the Dirt

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    February 28, 1880

    Beyond XX and XY

    Biology. Identity. Equality.