
Volume 4, Issue 79supp
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Features
Lighting Street Lamps by Electricity
Spectrum Analysis
Improved Spar Torpedo
M. Jablochkoff's Electric Candle
Notes on the Treatment of Sewage at Manchester, Salford, and Birmingham
Movable Dams
Hydraulic Tools
Engines of the Steamer Loudoun Castle
Hints to Young Machine-Tenders
An Old Paper-Maker