Volume 22, Issue 560supp
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Features
Recent Engineering Progress
Ailsa Craig Fog Signal Machinery
Housing for Ships' Boats
The Great Aqueduct, New York City
The Strength of Punched and Drilled Plates
Coal Mining
Ball Thrust Bearings
Chimney at Mechernich, Germany
Henning's Testing Apparatus
Canals and Railways in Colorado
The Brotherhood of Railroad Brakemen
Aerated Bread Making
Loze & Helaer's Filtering Apparatus
The Operation of the Shutter in Instantaneous Photography
The Wire Creeper
Electrical Bleaching Process
The Royal Mint
Time in Geology
A Rare Orchid
(Vanda Lowi)