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Features

Combined Sawing, Boring, Molding and Planing Machine

Report on Testing Iron Armor Plates

Miscellaneous Summary

Notes on Naval and Military Affairs

The Color Products of Coal--Mauve and Magenta

Proportions of Locomotives

Valuable Receipts

Meucci's Kerosene Lamp

Paines's Spray Superheated Steam Engine

Salts of Silver, Photography and Indelible Ink

Petroleum is not Coal Oil

A Great Law of Nature

The London Exhibition--Wrought Iron

The Frigate Ironsides

The North is Invaded

Patent Claims

Recent American Inventions

To Our Readers

Blythe's Ventilating Cap

Smiths' Mode of Setting Tombstones

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    Correspondence

  • Notes and Queries

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September 20, 1862

See the World from a Different Perspective

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