The London Underground Railway, What is Charcoal?, and more

The Iron Manufacture--Smelting

Commissioners to the French Exhibition

Editorial Summary

The Buckeye Gate Latch

Farrar's Adjustable Ladder Hook

Ferrier's Double Action Churn

Street Railroads

Foreign and Home Built Machinery

Molten and Fluid State of the Globe--Artesian Wells

Goff's Bag Fastener

Interesting Patent Office Decision--Improvements in Mode of Sinking Wells

Science Familiarly Illustrated

Recent American and Foreign Patents

Answers to Correspondents

Edson's Hygrodeik

Isaac's Improved Foot Bath

Geology of North and South America--Professor Agassiz' Lecture

Qualifications for Public Business

Ingenious Bull

Trade Marks

Patent Claims

Issued from the U. S. Patent Office