Improved Self-Acting Fire Tank

A Novel Traction Engine for Rapid Transit

Honor to Whom Honor is Due

Power Railway Brakes

Explosions Produced by High Musical Tones

The Proposed Introduction of Water Meters in Cities

The Sewing Machine Monopoly

The Annexation of Brooklyn to New York

Collapse from Low Water in Steam Boilers

The International Metric Commission and Its Work

Registering Tell Tale Clock

Improvement in Safety Valves

Combined Blacking Brush, Box, and Holder

Self-Lighting Signal Lantern

Stilwell's Lime Extracting Heater and Filter

A New Bottle Stopper

A Novel Form of Key

Local Boiler Inspection

Astronomical Notes

Scientific and Practical Information

New Method of Attaching Handles to Saws

Emerson's Diamond Stone Saw

Instrument for Measuring Fibers

The New Parliament House in Berlin

Decisions of the Courts

United States Circuit Court

Patent Office Decisions

Recent American and Foreign Patents

Answers to Correspondents

Communications Received - March 8, 1873

Canadian Patents

OFFICIAL LIST OF PATENTS GRANTED