
Volume 20, Issue 504supp
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Features
Mr. F. Siemens' Improved Boiler Furnace
Electric Tramcars
Improved Propeller Shaft
A Simple form of Voltaic Regulator
Electro-Metallurgy at the Exhibition of Electricity
Glaesener Secondary Battery
A Simple form of Influence Machine
Applications of Electricity to Medicine
Historic Electric Apparatus at the Philadelphia Exhibition
A New and Rapid Method of German Silver Analysis
Presses for Beet Roots, Etc
Economical and Fireproof Plastering
Benjamin Day's Shading Mediums
Water-Waste Preventer
Balance for Candles
The Best Ten Buildings in the United States
Pair of Iron Gates
Ginger Ale
The Linne Monument at Stockholm
The Sun's Work
A New Theory of Radiant Heat