Volume 88, Issue 9
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Features
The Cooper Hewitt Interrupter
The Current Supplement
Radium-Its Extraordinary Properties
Proposed Subway and Elevated Extension in New York City
New Method for Cutting Asphalt Pavement
The Production of Low Temperatures
The Injured Hull of the United States Cruiser "Brooklyn"
The Construction of the Asyut Dam; Nile Irrigation Works
Our London Correspondent, From Notes by Sir Benjamin Baker, Engineer of the Works
Tripping Hoist for Well Buckets
Venomous Serpents—III
A New Insulating Material
Two Simple Fastening Devices
Patent Department
Adjustable Surface Cultivator