Volume 93, Issue 3
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Features
Time for Another Principia
A Poor Start
The Current Supplement
Burke's Own Account of the Spontaneous Action of Radium on Gelatin Media
Official Meteorological Summary, New York, N. Y., June, 1905
Opening of Extensions of the New York City Subway
The Navy Wireless School
Tallest Concrete Chimney Ever Constructed
A New Aeroplane
The Temple of Abu Simbel
The Sixth International Automobile Race for the Bennett Trophy
Peary's Arctic Ship, the Roosevelt
Some New Automobile Track Records
An Electrically-Operated Gyroscope
A Newly-Discovered Motion