The Chemistry of Cellulose
A Substance Little Understood
Features
Additional Points about the New Paris Subway
Modern German Police Call and Fire Alarm Systems
Some Recent German Designs
Value of Illuminatinǵ Enǵineerinǵ to the Manufacturer
A New Art and Its Possibilities
Rules Governing the Competition for the $15,000 Flying Machine Prize Offered by Mr. Edwin Gould
A Spanish Mininǵ Concrete Pier
A Remarhable Cement Structure at Guadalquivir
Blue-Printinǵ by Machinery
A Collection of Interesting Contrivances
An Appreciation of Thomas Davenport
A Pioneer in Electrical Engineering
Maǵnetic Alloys
A New and Important Field of Investigation
New Methods in Astronomy
Their Application to the Evolution of Our System
The Determination of Standard Time
How the Astronomer Sets Your Watch for You
