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The St. Gothard Tunnel

The Railroad Signals Now Used

[From the Eleventh Anual Report of the Massachusetts Railroad Commissioners.]

Weirs and Dams in India

Arcot's New Continuous Furnace for Gas Distillation

The Lace Manufacture of Calais

Concerning Amber

By Erminnie A. Smith

Lightning Conductors and the Protection of St. Paul's Cathedral

The Brussels Permanent Exhibition

Lost at Sea

The Turkish Bath.—What it is, and What it Does

By John Stainback Wilson

Yellow Fever

Salicylic Acid

A Homely Substitute for Cod-Liver Oil

The Medical Uses of Milk

Substitute for Castor Oil

How Urari is Made

The Drainage and Sewerage of Cities

By E. Waring

Treatment of Phthisis by Inhalations of Benzoate of Soda

On the Detection of Organic Matter in Water

By F. Tiemann and C. Preusse

Varnishes for Protecting Iron

Rosin and Fats in Cements and Lubricants

Printing on Woolen

Gelatine Emulsion for Amateurs

Ultramarine

By C. Furstenan

The Soaking of Woolen Cloth

Properties of the Gum of the Euphorbiaceæ

Phosphorescent Powders

Lactate of Ferrous Oxide Developer

Injury to Vegetation by Acid Gases

Aniline Fuming for Durable Gelatine Paper

Preparing Gelatine Plates

By John Matthews

On the Secular Changes in the Elements of the Orbit of a Satellite Revolving About a Planet Distorted by Tides

Aztec Ruins in New Mexico

Culture of Onions

The Canary Islands

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    May 01, 1880

    Think Outside the Gift Box