National Academy of Design, New Chemical Toy

South-West Alleghanies

Gleanings from the Polytechnic Association

Editorial Summary

Hamaker's Patent Step for Upright Shafts

Davis' Improvement in Organs

The Suspenders Bridge

The Cotton Manufacture--Mule Spinning

Dangers of Kerosene Lamps, and Means of Safety

Science Familiarly Illustrated

Spontaneous Combustion of “Coffee”

Recent American and Foreign Patents

Answers to Correspondents

Mending Iron Castings

American Chilled Wheels in England

Pseudo-Scientific Speculation

Aerolites

The Needle Gun and the Rebellion

An Important Patent Law Question

Our Water Streets--Ferrying, Bridging and Subtubing

Patents Claims

Issued from the U. S. Patent Office

The Brotherhood of Locomotive Engineers

The Markets

Extension Notices