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Features

Improved Marine Governor

The Half Launch Finished

One Hundred Tuns of Grass to the Acre

List of Patent Claims

Draining the Everglades

County Patent Rights

California Bituminous Springs

Alloys of Aluminum

Speed of Millstones

Millstones--Their Speed and Setting

Mechanics' Halls

Managing Boilers

How to Use the Divining Rod

Protection of Telegraph Cables

Burr Stone

Burnap's Improved Pump

Automatic Alarm for Locomotives

Galvanized Iron

American Pearls

Wants of California

The Pacific Wagon Road

Sewing Machines

Scientific Farming

Notes on Science and Foreign Inventions

Camlet

The Secret of Success in Tempering Tools

The Desjardins Bridge Catastrophe

Peruvian Bark

Important Items

Correspondents

Electricity for Discovering the Seat of Disease

Fall of a Suspension Bridge

Mechanics

Sarven's Patent Wood Bending Machine

Telegraph Cable Across the Hudson

The Frigate Niagara

To Make Yellow Ink

Departments

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    May 02, 1857

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