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Features

Improvement in Machines for Dressing Millstones

Circulation of Water in Steam Boilers

By Chas. E. Emery

On Tungsten

By Charles A. Joy

Boiler Incrusuations

The Home of the Perfumes

The New Grand Opera House, Paris

A Home-Made Differential Thermometer

One-Horse Road Steamer to Carry Two Persons

Profits of Advertising

Recent Speculations on the Earth's Origin

Williams' Improvement in Locking Nuts

Our New Paper Currency

Supplementary Report of the Massachusetts Railroad Commissioners on Steel Rails

Proportion of Heat Utilized in Steam Engines

Engineering Projects

Scientific Intelligence- March 26, 1870

Every Pane of Glass is a Hole to Heat

Answers to Correspondents- March 26, 1870

Recent American and Foreign Patents- March 26, 1870

Official List of Patents- March 26, 1870

Departments

  • Letters

    Correspondence- March 26, 1870

  • Recommended

    New Books and Publications- March 26, 1870

  • Departments

    Business and Personal- March 26, 1870

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March 26, 1870

Think Outside the Gift Box