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Features

Hot Air Furnace

Oil for Machinery and Illumination

Lime in Agriculture

The Real Cause of the Fishy Taste of Boston Water

Heliographic Pictures

New Orleans Academy of Sciences

Improvement in Lathes

Castor Oil Electuary

The Art of Dyeing--No. 10

Feeding Flour Bolts

Spiritual Philosophy

Incrustations and the Feed Water of Boilers

Workings of the New Steamboat Law

The Use of Snails

Gates of Water Wheels

Improved Straw Cutter

Improvement in Grain Separators

Chimney Safes

Improved Skate

Review of the Proposed Amendment in the Patent Laws--Important Movements in Congress

To Subscribers

Artificial Manure--Deterioration of the Soil

White Maple Sugar

Notes of Foreign Scientific Matters

List of Patent Claims

Remedy for the Ship Worm

Important Items

Mechanics

Inventors and Manufactures

Slate Quarry in Virginia

History of Reaping Machines--No. 21

Our Inland Commerce

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  • Letters

    To Correspondents

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial