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Features

Paper Testing at the Present Time

Compound Express Engine–Paris, Lyons, and Mediterranean Railway

Frame for Singeing Cotton Thread

Roberval's Method of Drawing Tangents

By C. W. MacCord

Portable Accumulators for Stage Effects

The Cohesive Property of Gold: Its Character, Value, and Availability

By S. H. Guilford

Crypt of the Royal Chapel, Granada

The Tall Flowers of Autumn

Genoa

The Future of the Gutta-Percha Supply

By M. Eugene Serullas

Removing the Vermiform Appendix

Vertigo

Training of Horses

Aberration Problems

Salophen

The Determination of Carbon Dioxide in the Air of Buildings

By Augustus H. Gill

Useful Engineering Books

Patents

Peroxide of Sodium

By M. Prud*amp*apos;homme

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