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Features

Hudson River Railroad

The Good of Theories

The East Tennessee and Georgia Railroad

Bushnell's Improved Metal Drill

Block from the old Frigate Hussar

Copper in Wisconsin

Beards

Healey's National Picture

Porter's Tuyere Iron

Stove Polish

Poetry and the Fire Annihilator

The Fair of the American Institute

Culture of the Olive

The Exhibition of the Franklin Institute

Cedars and Pines of California

Scorpions in Egypt

Millholland's Coal Burning Locomotive

American Telescopes

Liebig on Electro Magnetism as a Motive Power

Improvement in Taps for Cutting Screws

Improvement in Pianofortes

Improvement in Carriage Springs

Improved Seed Planter

Improved Machine for Drying Clothes

Smoke Condensing Grate

Improved Lamp

Patent Office Report for 1850--No. 5

More Improvements Wanted

A Word to Apprentices

Fringe Twisting Machine

The Fire Annihilator--An Old American Invention

United States Steamships

Patent Office Building

The Eatonton Railroad

Mechanism

List of Patent Claims

Petition for Extension of a Patent

New Edition of the Patent Laws

Binding Volume 6

Postage on Books

Patent Claims

Back Numbers and Volumes

Immensity of Space

A Disinfecting Agent

Power of Condensation Possessed by Charcoal

New Prospectus to Mechanics

Inventors and Manufacturers

Cure of Rattlesnake Bites

Varnish for Oil Paintings

Size for Draughtsmen

Departments

  • From the Editor

    To Correspondents

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial