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Features

On Some Modern Systems of Cutting Metals

By W. Ford Smith

The Concentrating Mill at the O'neil Mines, Galena, Kansas

Improved Compressing Machine

The Jointing and Testing of Gas Mains

By C. W. Folxard

Ancient Spherical Clock

Elastic Wheeled Traction Engine

High-Speed Boats

Rarefied Air as Motive Power

Twin Screw Shallow Draught Steamer

Proposed New Tunnel Under the Thames, London

A House Costing $2,500

Atmosphere and Space in Painting

By G. A. Storey

F. Schaper's Restoration of the Hermes of Praxiteles

Tasar Silk

Reichenbach and the Psychical Research Society

Sir William Siemens on Solar Physics

On the Action of Chlorine on Certain Metals

On Radiant Matter Spectroscopy: a New Method of Spectrum. Analysis

By William Crookes

The Luminosity of Non Illuminating Gas Flames

Origin and Formation of Metalliferous Deposits

Cassia and Cinnamon

Cocoa-Nut Fiber

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July 21, 1883