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The German Emperor's Ninetieth Birthday

William Ripley Nichols

Member of the Boston Society of Civil Engineers

By George F Swain

William Denny

The Great Egyptian Water Works

A New Automatic Compressed Air Car

A Steam Propelled Torpedo

Stiffened Suspension Bridges

Girders and Beams

Magazine and Repeating Rifles

Principles and Practice of Ornamental Design

Lecture IV

By Lewis Foreman Day

The Havre Maritime and International Exhibition

The Telephone and Photophone

By A. Graham Bell

Electrolysis of Copper and Zinc

By Alexander Shand

The Conduction of Electricity by Gases at high Temperatures

Life Energy, or the Dynamics of Health and Disease

By Nathl Alcock

Separation and Estimation of Boric Acid

By F. A. Gooch

A Card—Correction of Estimate of Cost

The Great Refractor of the Vienna Observatory

Analysis of “Pure Zinc” Made by the Bertha Zinc Company, Pulaski County, Virginia

By G. B Bird


  • Departments

    Patents - April 30, 1887

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