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Features

Improved Gun Carriage

Manufacture of Ultramarine

Miscellaneous Summary

The Expansive Working of Steam

The Chemistry of Animal Substances

Silicated Soaps

The Olier Patent for Security Paper

Big Guns--Why They Fail

The Valve of Research

Simple Locomotive Engines

Riots and Mob Law

Expansive Working of Steam in Marine Engines

Antiquity of Man

Experiments with Boiling Water

International Competition of Steam Fire Engines

The Reaction

Some Facts Concerning Reptiles

Recent American Patents

Patent Claims

To Our Readers

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August 01, 1863

Think Outside the Gift Box