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Features

Restoring Oxydized Bronze Figures

Evaporation of Salt and Fresh Water

Trees on Farms

Wall Paper Poisonous

List of Patent Claims

Inks

Sowing Flax Seed

Heating by Steam--The Boiler

Priming in Steam Boilers

Curves

Hydraulic Cement for Tan Vats

Elastic Horn

The Amount of Air We Breathe

The Commissioner of Patents

Inventions Wanted--Harvesters

Purifying Gas

Stone Cutting by Steam

Improvement in Husking Machines

India Rubber Patent Cases

Etching Marble

Mind and Matter

Lead, Lead Pipe and Shot

Electric Printing on Glass

Meerschaum Pipes

The Pressure of Confined Gunpowder When Fired

Correction

Turbine and Overshot Wheels

Lightning Conductors

Railroad Expenses

Mechanics

Inventors, and Manufacturers

Smoke-Burning Furnace

Steel for Tools

Departments

  • Letters

    Correspondents

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