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Foot Bridge over the River Ouse at Bedford

On the Comparative Merits of Deep Keel and Center Board Yachts for Racing Purposes

The Morton Valve Gear

Modified Corliss Gear

Krupp's Projectiles and British Steel-Faced Plates

Coal Hoist of the Philadelphia and Reading Railroad

Improved Transport and Pontoon Equipment

By Lieutenant E. S. Copeman

The Yaryan Concentrator at the Glasgow Exhibition

Photographic Notes

Bell's Water Jet Telephone

Magnetic Strains

The Influence of Aluminum upon Cast Iron

By W.J. Keep, C.F. Mabery and L.D. Vorce

Superficial Tension


By Archibald Geikie

The Physical Aspect of the Planet Mars

Progress in Greece

Vegetable Rennet

The Maurer Heliograph

Building Plans and Specifications


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September 08, 1888

Confronting Common Wisdom