Hadrian's Villa at Tivoli

Thumb Ring Lore

How did the Romans Heat their Living Rooms and Baths?

The Moros and their Country

A Review of the Existing Methods of Cultivating Anaerobic Bacteria

Absorption of atmospheric oxygen

The Biological Reaction of Blood

History of Cold and the Absolute Zero

Royal Danish Porcelain

Punta Arenas: The Most Southerly Town on the Globe

Some Animals at the Zoological Gardens in Berlin

The Testing of Cement

A New Definition of Portland Cement

Chamois Skins

Compound Locomotives are Twenty-Five Years Old

Electrically-Operated Air Compressors

The World's Telegraphs

German Electrical Manufacturers

Comparative Acceleration Tests with Steam Locomotive and Electric Motor Cars

Trade Suggestions from United States Consuls

Selected Formulæ