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Features

The New Eddystone Lighthouse

Manufacture of Large Iron Pipes

Irregular Gear Motion

Manholes on Pipe Sewers

The Brooklyn Driven Well System

First Report on Friction Experiments

By Beauchamp Tower

Siemens' Dynamo

Method for Rapid Demagnetization

By John Trowbridge and Walter N. Hill

Piuri, or “Indian Yellow”

By T. N. Mukharji

A Simple Rain Gauge

Peat as a Gas-Making Material

Bottle Glass

The Preparation of Alum

The Repeated Boiling of Hops

By Schneider

An Easy Method of Intensification for Wet Plate Negatives of Line Engravings

Production of Oxygen Light

Novel Method of Locally Intensifying and Reducing Gelatine Negatives

By Herr Eckert

On the Pressure of the Vapor of Mercury at the Ordinary Temperature

By McLeod

An Actinic Method for the Determination of Organic Matter in Potable Water

With the Application of the Method to the Water Supplies of Philadelphia, Newark,. Jersey City, Brooklyn, and New York

By Albert R. Leeds

The Precipitation of Glucose with Lead Acetate

The Evidences of Ancient Glaciation in North America, and their Bearing on the Theory of an Ice Period

By J. S. Newberry

How Apples and Pears Bear their Fruit

The Peach Wall at Ditton Park

The Swiss Lake Dwellers

The Great Pyramid, and Theories Concerning it

Micro-Parasites of Fishes

Rainbow Rings about the Moon

Origin of the Cells of the Hive Bee

Victoria, Hong Kong

The Care of Horses

A Physiological Phenomenon

The Nature of the Existence of Matter

By E. R. Knowles

Departments

  • Departments

    Patents - January 12, 1884

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial