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Improved Fuel Feeders

High Speed Steamships

High Pressure Filtering Press. —System of Bertin-Godot

Quartz Crushing Machinery

Gold Mining

Electric Exploding Apparatus for Mining Purposes

Equipotential Law Followed by Nobili's Rings

Practical Notes of Plumbing

By P. J. Davies

A Curious Craft

The Optical Requirements for Photographing on a Scale of Nature

Mercury Intensifiers

By Cosmo I. Burton and Arthur P. Laurie

The Great Wall of China

Pistachia Gum

Winchester Cathedral

Knots and Splices

Lifting Tackle

Detection of Gold

Resistance of Grape Vines to Phylloxera in Sandy Soil

Oil Adulteration

The Cultivation of the Ramie Plant

Lycopodine, the First Alkaloid of the Vascular Cryptogams

By Karl Boedeker


By D. P. Penhallow

Cotton and its Future.—An Opportunity for Invention

Dredging in the Mediterranean

On the Cause of the Arid Climate of the Western Portion of the United States

By C. E. Dutton

Areas of Inland Waters


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