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Features

Neveux's Vacuum Pump

The Generation of Steam, and the Thermodynamic Problems Involved

By William Anderson

The Rondout Bridge

The French Iron Clads L'indomptable and Le Marceau

Improved Gas Engine

Improved Sponge Filters

Piefke's Filter

The Hyatt Filters

Lead and Tin in Pottery and Glass

Ceramic Colors

New useful Clearing Solutions for Gelatine Negatives

Manufacture of Charcoal

The Color Blue in Building Materials

Roof Coverings

Marcillac's Apparatus for Registering the Work of Piles

Sound-Mills

Michaelis's Photo-Thermometer

Submarine Explorations

On Animal Chlorophyl

A Mathematical Puzzle.—“The Packer's Secret”

Glycerine in Beer

The Spirit of Content

Departments

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June 21, 1884

Think Outside the Gift Box