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The Spanish Battleship “Pelayo”

The Transport “Alfonso XIII”

The Loss of the French Steamer “Bourgogne”

Colors used in the Manufacture of Soap

The Military Medical Services of Cuba

The Bolometer

By S. P. Langley

Notes on Microscopical Technique

By G. Carl Huber

A Proposed Mountain Railroad for the Tyrol

The Right to Property in an Idea

By Allen Ripley Foote

Miscellaneous Notes

Selected Formulæ

Engineering 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)

Trade and Industries in the Philippine Islands

Animated Pictures



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