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Single-Rail Railway

Sinking Shafts through Quicksands by Freezing

Improved Safety Valve

Lathe for Manufacturing Spokes

Smoke Burning Furnaces

By Frank C. Smith

The Generation of Steam and the Thermodynamic Problems Involved

By W. Anderson

Computing the Heating Surface of Hot Blast Stoves

The New Post Office, Minneapolis

A Water Pyrometer

Dufour's New Registering Barometer

Artisans' Dwellings, Hornsey


The Cost of Electric Batteries

An Easily-Constructed Microphone

The Electric Tricycle

Electrical Conductors

A Simple and Sensitive Thermostat

By N. A. Randolph

General Sutter's Account of the Original California Gold Find

New Zealand Scenery—Lake Hawea

The Kaibab, Grand Canon of the Colorado River, U. S. A

The Java Earthquake

Parallel Curves

By C. W. MacCord

A Camera Lucida

The German Carp, and its Introduction in the United States

By Chas. W. Smiley

Method for Preparing Uranic Nitrate or Acetate from the Residues

By J. T. Savory

Selenium in Sulphuric Acid

By Drinkwater

The Chinch-Bug


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    January 19, 1884