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Adjustable Indicator for Rounding Saws

Improvement in Malt and Grain Kilns, Bromide of Potassium

The Watch--Its History and Manufacture

By H. F. Piaget

On Musical and Sensitive Flames

The Relation Between the Specific Gravity and Pressure of Gas

Manufacturing, Mining, and Railroad Items

Recent American and Foreign Patents

Extension Notices

Answers to Correspondents

Pliable Glass

Lectures on the Animal Kingdom

Machine Shop Surgery

Technical Education

“The Wheel”

The Polytechnic Association--Its Usefulness and Abuse

Importance of Balancing the Parts of Machinery

Oxygen Gas from Manganese and Soda

Editorial Summary

Patents and Claims

New Publications


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  • Business and Personal

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June 06, 1868

Of Shamrocks and Science

Happy St. Patrick’s Day