Features
The Wieliczka Salt Mines
Fragrant Woods
A Study of Wheat
The Microscopical Structure of the Different Coats
New Pyrometers
A Good Mounting Material
Light Draught, Fast, Stern Wheel Steam Yacht
On the Loading of Monster Guns in Modern Ironclads
The Stern Wheel Steamer Montana
Heavy Ordnance
The St.Gothard Tunnel
The St. Gothard Tunnel
Firebrick Fire Boxes for Locomotive Boilers
A New Duplex System
New Sounder
Notes on the Microstructure of Spiegeleisen.—II
Condensed from a Report to the Society of German Engineers