Volume 45, Issue 1158supp
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Features
The Growth of Invention in Cycles
Machine Tools
Hult's Rotary Engine
Progress of Work on the Panama Canal
Reversing Steam Turbines
Engineering Notes
Selected Formulæ
Miscellaneous Notes
The Gobelins Manufactory at the Exposition of 1900
Black Print Processes
Nocturnal Photographs of the Eiffel Tower
Instinct and Intelligence in Animals
An Electric Curve Tracer
For Delineating the Forms and Phases of Periodic Electric Quantities, Viz., Electric Currents, Electromotive Forces, Electric Power and Magnetic Induction, also for Tracing Hysteresis Curves. '