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Improved Separator and Thrasher

A Stone Falling Through the Earth

Remarks on the Subject of Force in General

By John A. Roebling

High and Low Steel

A Practical Plan for Destroying the Span Worm

Rudolph & Kasefang's Brush Handle

Manufacture of Bells

Reminiscences of Glass-Blowing

Farmers' Club

Miscellaneous Summary


Professor Bowen on the Currency

Boring Steam Cylinders

Impregnable Ships of War

End of the Goodyear Extension Case

Patent Claims

Issued from the United States Patent-Office

Transplanting Trees


  • Departments


  • Patents

  • Notes & Queries

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