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Features

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

Hot-Beds

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

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