A Reservoir That Will Float
A German Solution of the Difficulties of Subaqueous Concrete Work
A German Solution of the Difficulties of Subaqueous Concrete Work
A Constantly and Rapidly Growing Field for the Application of Electricity
A rifle sight made for the rough use and exposure incidental to active service.
By Our Military Expert
Interview with Thomas Alva Edison: Personal Experiences During the Industrial Upheaval that Followed the Outbreak of the War
A Plea for the Utilization of Our Water Powers
How the Temperature is Automatically Regulated in an Electric Steel Furnace
A Myriad of Conveniences Afforded by this Silent, Noise less, Wonderful Power
Directions in which this form of Traction is Likely to Expand