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The Theory of “Stream Lines” in Relation to the Resistance of Ships

Artificial Milk

International Congresses at the Centennial

Egypt at the Exhibition

Prospects of the Department of Education

The Ohio Centennial Building

Exhibition notes

Locomotive for the Western Railway of France

New Traction-Engine

Novel Speed-Indicator

By Charles E. Moss

Examples of the Crystallization of Wrought-Iron

By Joshua Rose

Wear of Wire Rope

Hydraulic Locomotive

Proceedings of Societies

American Social Science Association

Condensed Beer

On the use of Tin and Gold Combined

By J. Paetsch

American Chapel, Rome

Cornish Pumping Engines

Iron Lighthouse

Wreck of the Baltimore Air-Ship

The Wood of Noah's Ark

Chalcophanite: A New Mineral Species

On the Chemistry of the Urine

Sunshine

The Questionable Value of Hypodermic Solutions

A New Method of Imparting Artistic Finish to Photographs

By E. Dunmore

Coal-Mines in Russia Developed by American Locomotives

Use of Paper

Bicheroux's Gas-Furnace

“Brain and intellect”

Improvement in Chain-Belts

By H. Bushnell

Improvement in Propelling Canal-Boats

By A. Bugbee

Improvement in Rolling Mills

By J. Jepson

Messrs. Hadley Brothers' Mitre-Cut Nail Works, Birmingham, Eng

Improvement in Speed-Indicators

By M. A. Wier

New Steam-Engine Frame

By W. S. Finney

The Greatest waste in the World

The Kerosene of New South Wales

The Oxyhydrogen Light

House Plants

New-York Academy of Science

On Silicate of Soda in Textile industry

Application in Wool-Scouring

Rapid Mode of Detecting the Adulteration of Butter with other Fats

By J. W. Gatehouse

On the Transmission of Musical Tones Telegraphically

By Elisha Gray

Amateur Wood-Workers

The Retail Price of Bituminous Coal in New-York

History of the Suez Canal

Lessons in Mechanical Drawing

By C. W. MacCord

Trout-Ponds

By J. Ives Pease

Trial of a Flying-Machine

The “Chapman” Life and Surf Boat

The Railway-Bridges in London

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