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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

Conservatism Among Mechanics


Army Bread--Health of Soldiers

Reported Failure of the Stafford Projectile

Distillation and Effects of Heat

Recent American Patents

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

Patent Claims

To Our Readers

Disinfecting Agents


  • Departments

    Notes and Queries

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Gene Therapy Comes of Age?

Gene Therapy Comes of Age?

Explore the latest advances