An Egyptian Lourdes
The Discovery of the Lost City of Saint Menas
Features
The African Ostrich Industry
A Profitable South African Monopoly
Use of Dead Timber in the National Forests
Fishes that Hatch their Eggs in their Mouths
The Pineal Eye the Pineal Gland, and the Pituitary Body
The Temperature of the Sun
Experiments on Mont Blanc
How Observations of Mars are Made at Flagstaff
The Battery Tunnel, New York
The Training of Railroad Apprentices
Santos Dumont's New Hydroplane
A Craft Built to Mare Sixty Miles an Hour
A New Type of Collier
For the Coasting Trade
How Rainfall is Absorbed
The Development of Armored War Vessels.—IX
Armor Plating in the United States
Brass Waste in Machine Shop and Foundry
Elements of Electrical Engineering.—III
The Arc-Light Dynamo
The Economical Utilization of Labor
Considerations Governing Efficiency
Coal Mined by Machines
The Origin of Radium
The Search for the Parent Element
