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Great Britain's Neutrality

The Metals used by the Great Nations of Antiquity

History of the Stone Arch

By Malverd A. Howe

American Competition in Europe

Electrical Notes

Miscellaneous Notes

Miscellaneous Formulæ

The Armies and Navies of the United States and Spain

The Strategic Value of Cables

Negotiable Paper for Patent Rights

Kites: Their Theory and Practice

ii.theoretical principles.

By B. F. S. Baden-Powell

Sewage Disposal

By Benjamin F. La Rue

Apparatus for Distributing Railway Tickets

The New Snow-Plow of the Rhætian Railway

Ladle Crane for Steel Works

The Jelman-Wepp Crusher

Exploring a Great Australian Desert

The Solemn Apes of Indo-China

Remarks on Rhus Toxicodendron

By Louis F. Frank



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    June 11, 1898