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150-Ton Electric Derrick Crane

The English Correspondent of Scientific American

Engobes or Slips

Electrical Machinery, Apparatus, and Supplies

Recent Progress in Producer Gas Power Installations

By Godfrey M. S. Tait

Storage Batteries and Battery Plates

By George P. Hutchins

The Del Proposto System of Electrical Transmission Gear for the Propulsion of Ships by Irreversible Engines

Novel House-Moving Operations

By Edward H. Crussell

Some Recent Developments in Plant Growing

By G. Clarke Nuttall

Our most Destructive Rodent

How Soft French Cheeses are Made

By Jacques Boyer

Artificial Fertilizers: Their Nature and Function.—III

The Nitrogenous Manures

By A. D. Hall

Rennet

How to Build a 5-Horse-Power Stationary Gas Engine

By E. F. Lake

Pear-Shaped Stars

By Alexander W. Roberts

The Utility of Inventions

By John E. Brady

Electrical Notes

Science Notes

Trade Notes and Formulæ

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    June 22, 1907

    Think Outside the Gift Box