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Features

Long-Span Bridges

By W. H. Burr

Causes and Correction of Water and Gas Main Leakage

Aluminium in Motor Carriage Building

A Convenient Dark Room

By John A. Foote

The Highest Aim of the Physicist

By Henry A. Rowland

The Artificial Hatching of Salmon in Norway

The Development of Iron Manufacture in the United States in the past Seventy-Five Years

By John Fritz

Ankylostomiasis in Coal Mines

Dalou's “Triumph of the Republic”

The Andrée Buoy

The Rapid Seasoning of Wood through Electricity

Trade Suggestions from United States Consuls

Miscellaneous Notes

Trade Notes and Receipts

Selected Formulæ

New Method of Designing Fabrics

Variation and some Phenomena Connected with Reproduction and Sex

Acquired Characters

Geography

By John Murray

Cultivation of the Pistachio Nut in the South

Patents!

Departments

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    December 23, 1899

    Think Outside the Gift Box