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Features

The American Dredgers on the Panama Canal

Steam Launches and Cutters

Some Recent Experiments with Oil in Stopping Breakers

Binary Vapor Engines

The Great Atlantic Steamships.—Their Dimensions and Power

Street Pavements

By Wm. B. Knight

A New England Coasting Sled

Heat Regulator

The Marot Tunnel

Completion of Washington Monument

Duchamp's Aerial Single-Rail Railway

The Channel Tunnel

Roofing-Tiles

The Wallace Statue, Aberdeen

Fireproof Fixing Blocks

Revolving Calcining Furnaces

The Milling of Ores.–Stamps versus Rolls

Soldering of Lead by Means of Lead Chloride

Home Made Drawing Tools

On the Painless Extinction of Life in the Lower Animals

By Benjamin Ward Richardson

Progress in Provision for the insane, 1844-1884

Tanekaha Bark of New Zealand

The Kola-Nut

Cultivation of the Coca Plant in the United States

Ash of Vegetable Liquids

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February 14, 1885

Confronting Common Wisdom