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Features

Writing Machines

Provide for the Birds

Princeton College

McGaffey's Seed Planter

Charleston Artesian Well

Cast-Iron Foot Pavement

The Art of Dyeing--No. 16

Spare the Birds

Influence of Inventions on Social Life

Hermetically Sealed

Climatising Animals and Plants

White Printing

Theories of Electricity

Rule for Calculating the Weight of a Casting from the Weight of Its Pattern

Rotten Muntz Metal

Primitive Fossils

Dumb Waiters

Steam Engine Valve

Plow Improvement

Morris' Improved Bucket for Chain Pumps

Improvement in Rotary Pumps

Hand Corn Planter

Excavators

Endless Chain Pump

To Inventors Only--Models

The New City Hall

The Canals and Railroads of New York

Provision and Fruit Preservation

New Rifle Bullets

Guano

Curious Electrical Phenomena

Boston Water

List of Patent Claims

Sharp's Rifle in England

Oil From the Bowels of a Mountain

Water-Proof Blacking

History of Reaping Machines--No. 27

Mechanics

Inventors, and Manufacturers

Why Do Teeth Decay

Departments

  • Letters

    To Correspondents

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April 14, 1855