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Features

Improvement in Wood-working Machinery, Grape Shot

Scientific Observations on the Supply and Outflow of the Northwestern Lakes--The Meter and Method of Using it--Results of the Observations

The Manufacture of Arms in Persia

A New Toy for Young and Old

Practical Recipes

The Lenox Top

Pickering's Velocipede

The Indians--General Sherman's Official Report

Protection of Sheep from Dogs

Exhibition Exchange for Patentees

The Parsons Steel Lined Gun

Answers to Correspondents

Recent American and Foreign patents

A Gas Inimical to Animal Life

What an American has Done Abroad

Our Plans for 1869

Natural Gas--The Earth a Gasometer

Cheap Ice Houses--A Good Plan

Reminiscences of Travel in Spain

Washington Correspondence

The Social Science Congress in England

A Significant Fact

The Engines of the Wampanoag

Patents and Claims

Patent Offices

Departments

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    December 09, 1868