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Improved Cotton-Opener and Cleaner, Testing Gilded and Silver Articles, and More

Perfumes and Perfumery

The Chemistry of Animal Substances

Miscellaneous Summary

Army Bread--Health of Soldiers

Reported Failure of the Stafford Projectile


Conservatism Among Mechanics

Breech-Loading Rifles at the Next Fair of the American Institute

Recent American Patents

Distillation and Effects of Heat

Patent Claims

To Our Readers

Disinfecting Agents


  • Departments

    Notes and Queries

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July 25, 1863

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