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Features

Improved Hay Fork and Stacking Apparatus, How Money Can be Made, and More

Pillsbury and Milliken's Stove-Pipe Fastener

Varieties of the Exposition

Editorial Summary

Petroleum as a Fuel

Steam Boilers--Their Form, Construction, and Material

Number Five

Mining Intelligence

Business and Manufacturing Items

Recent American and Foreign Patents

Answers to Correspondence

Four Years' Work of a Thousand Men

Expenses of a Weekly Newspaper

Caution

The Vocation of the Engineer

The Belt Question

Gleanings from the Polytechnic Association

The New Steam Gun Carriage

Patent Claims

Extension Notices

New Publications

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June 01, 1867

Reanimate Your Brain

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