Colorado Dam is Permanent
Is Rusting Electrolytic?
At Last a 25-Knot Liner
Ramsay's Discovery of the Degradation of Copper to Lithium
The Story of an Ancient Mine
The 25-Knot Turbine Liner “Lusitania”
The International Kite Ascensions
The Erection of the Blackwell's Island Bridge
A Revolution in Postal Car Construction
The Greatest of Mastodons
An Electric Dining Table
Recently Patented Inventions
Notes and Queries
Index of Inventions
New Books, Etc.