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Features

Improved Carriage and Car Spring, The Present Yield of Gold, and more

Tyndall on Radiation

An Insect Show

Colors

Newhall's Lamp Attachment

The Double Magic Lantern

Farmers' Club

The Jewelry Manufactured at Birmingham England

Recent American Patents

Miscellaneous Summary

Lock Up the Throttle Valve

Losie's Thimble

The Produce Exchange and the Course of the Grain Trade

To Our Readers on the Pacific Coast

Small Boiler and Engine

What is Superheated Steam?

Patent Claims

Issued from the United States Patent-Office

Patent Agency Office

Departments

  • Departments

    Correspondence

  • Notes and Queries

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