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Features

The Snap Flask

A Blow to the Trades' Unions

The Science Record for 1873

Annual Report of the Commissioner of Patents

The Vienna Exposition

Three Fearful Boiler Explosions in One Day

An Electrical Tower

An Old Friend Gone

Departure of Professor Tyndall

Matthew F. Maury

Floating Station for Floating Fire Engines

Improved Evaporator

Improved Pail Pump

Novel and Cheap Railways in Portugal

Engineering Notes

Improved Road Scraper

Automatic Car Coupling

Railway Progress in 1872

Railway Timber Bridge

Coffee

Recent American and Foreign Patents

Patent Office Decisions

Answers to Correspondents

Communications Received

Departments

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    Correspondence

  • New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

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February 22, 1873

Complex Causes. Alternative Solutions.