Volume 112, Issue 19
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Features
A Mother Ship for Submarines
A Combined Salvage and Drydock Vessel
Plan for the Improvement of Hell Gate, East River, A Black Finish for Iron and more
Science and the Forger
Instruments and Illustrations in Questioned Document Cases
Milling the Soil
Improving on the Old-Fashioned Plow
A System of Long Distance Typewriting
Eight Messages Sent Simultaneously Over a Single Wire