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Completion of the Second Tube to Brooklyn

Progress on the Erie Canal

Government Investigation of RailRoad Accidents

Comparative Economy of Producer Gas and Steam

Preservation of Steel Work in Tall Buildings

Glasgow and Municipal Ownership

By Day Allen Willey

Science Notes

The Current Supplement

Making Artificial Flowers

By Jacques Boyer

How to Study a Star Map

By Frederic R. Honey

A Hydraulic Air-Compressing Plant

Wooden Cars in a Railroad Wreck

Tablet Writings from the Ruins of Nippur

By H. D. Jones

Leduc's Artificial Plants and Cells

By Alfred Gradenwitz

Carborundum and Silicon Detectors for Wireless Telegraphy

By A. Frederick Collins

An Experiment in Acoustics

By Gustave Michaud

Special Camera for Copying and Enlarging


  • Departments

    Correspondence - March 16, 1907

  • Recently Patented Inventions - March 16, 1907

  • Notes and Queries - March 16, 1907

  • New Books, Etc. - March 16, 1907

  • Index of Inventions - March 16, 1907

  • Patents - March 16, 1907

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