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The Spanish Battleship “Pelayo”

The Transport “Alfonso XIII”

Colors used in the Manufacture of Soap

The Loss of the French Steamer “Bourgogne”

The Military Medical Services of Cuba

Notes on Microscopical Technique

By G. Carl Huber

The Bolometer

By S. P. Langley

A Proposed Mountain Railroad for the Tyrol

The Right to Property in an Idea

By Allen Ripley Foote

Engineering Notes

Selected Formulæ

Miscellaneous Notes

The Causes of the Explosive Effect of Modern Small Caliber Bullets

By Charles E. Woodruff

Variations in the Form of the Heart

Historical and Mythological Trees

Sinningia Concinna (Stenogastra Concinna)

Animated Pictures


Trade and Industries in the Philippine Islands


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    July 16, 1898