Scientific American Magazine

The Wheeler and Wilson Sewing Machine--A Model Workshop

Valuable Receipts

Polytechnic Association of the American Institute

Miscellaneous Summary

Internal Revenue Stamps upon Patent Documents

Now is the Time to Form Clubs

Steam Wagons Upon Common Roads

Progressive Science and Art

The Changes of a Piece of Silver

Paper for Ship-Building

General Burnside's Letter

Sinking of Iron Cylinders For Piers

What a Unit of Heat Can Do

Recent American Inventions

Patent Claims

Literary Notices

Correspondence

Notes and Queries