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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

Dalou's “Triumph of the Republic”

Ankylostomiasis in Coal Mines

The Rapid Seasoning of Wood through Electricity

The Andrée Buoy

Trade Suggestions from United States Consuls

Selected Formulæ

Trade Notes and Receipts

Miscellaneous Notes

New Method of Designing Fabrics

Variation and some Phenomena Connected with Reproduction and Sex

Acquired Characters


By John Murray

Cultivation of the Pistachio Nut in the South



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