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Features

Lifting Bridge at Tarante, Italy

Street Pavement—Past, Present, and Future

By John H. Sargent

The Panama Canal

Willis' Speedometer

Economical Illumination from Waste Oils

By J. B. Hannay

Bottle Corking Machine

Wool Hat Making

The “Wood” Ammeter and Voltmeter

How to make a Galvanometer

By C. C. Hutchins

Electric Lighting of the Steamships Victoria and Britannia

Iodide of Starch

By H. B. Stocks

Chemical and Allied Industries

Group III.—Destructive Distillation

By Watson Smith

A New Extractor

By R. Rempel

Robert Koch—His Work and Methods

By W. Lewis

Measuring Definite Quantities

By H. Treskow

Laboratory Apparatus for Fractional Distillation

By P. Monnet

Apparatus for Fractional Distillation under Reduced Pressure

By L. Meyer

Dr. Zur Nieden's Portable Hospital or Barracks

Animals Destructive to Submarine Cables

On the Existence of Certain Elements, Together with the Discovery of Platinum, in the Sun

Contributions from the Physical Laboratory of Harvard University

By C. C. Hutchins and E. L. Holden

Building Plans and Specifications

Discoveries in Rome

The Church of the Holy Sepulcher, Jerusalem

Departments

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January 14, 1888

Think Outside the Gift Box