Centennial Exhibition—U. S. Department

Centennial Exhibition

Centennial Exhibition.—United States Department

The Mammoth Grape-Vine in Agricultural Hall

Portable Engines and Boilers at the Exhibition

The International Exhibition of 1876

Steam-Boilers at the Exhibition

Watch-Making at the Centennial

The Road Steamer “America” at the Exhibition

Centennial Suggestions

Steam by the Pound

The Naylor Engines

135 Wister St., Gtn., Philadelphia, June 3,1876

The Norwalk Pump

The Gauging of Rivers

Combined Steam-Engine and Steam Vacuum Pump

Surface-Condenser for Steam Street-Cars

Grinding and Polishing

The St. Gothard Tunnel

Manganese Bronze

Some Recent Radiometric Experiments in Germany

Cast-Iron Railway Wheels

Locomotive Connecting and Parallel or Coupling-Rods

How the Colima's Crank-Shaft was Repaired

Aerial Navigation

French Academy of Sciences

Utilizing the waste Heat of Steam Boilers

Astronomy

Improvement in Fatty Ink Printing from Gelatin

Photo Plate-Cleaning Solution

Lake Nyassa, Africa

Lightning Freaks

Remedy for Lockjaw

The British Frigate “Hussar.”

Science in Schools

Imperial Celerity

New Galvanic Battery

Chinese Money