Volume 10, Issue 31
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Features
Provide for the Birds
Princeton College
McGaffey's Seed Planter
Writing Machines
Hermetically Sealed
Influence of Inventions on Social Life
Cast-Iron Foot Pavement
Spare the Birds
The Art of Dyeing--No. 16
Theories of Electricity
White Printing
Rotten Muntz Metal
Primitive Fossils
Climatising Animals and Plants
Rule for Calculating the Weight of a Casting from the Weight of Its Pattern
Hand Corn Planter
Excavators
Dumb Waiters
Endless Chain Pump
Morris' Improved Bucket for Chain Pumps
Steam Engine Valve
Plow Improvement
Improvement in Rotary Pumps
Boston Water
Curious Electrical Phenomena
The New City Hall
Guano
The Canals and Railroads of New York
Provision and Fruit Preservation
New Rifle Bullets
To Inventors Only--Models
Oil From the Bowels of a Mountain
List of Patent Claims
Sharp's Rifle in England
Why Do Teeth Decay
History of Reaping Machines--No. 27
Mechanics
Inventors, and Manufacturers