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Improved Beater Hay Press, A New Alloy, Split and Sawed Shingles

Utilization of Waste Products, The Way to Make an Eolian Harp

Improved Evaporator, The Iron-Clad Steamer Tonawanda

The Government Experiments in Working Steam Expansively

Recent American Patents

New Books and Publications

Miscellaneous Summary

Car Springs

English Estimation of Our Monitor System

The Pitches of Screw Threads


Our Next Volume


Patent Claims

Patents Granted for Seventeen Years!


  • Departments


  • Notes and Queries

  • Index

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June 25, 1864

The Antidote to Anti-Intellectualism