Features
The Ostrich Parks of Algiers
Geography
The Age of Ice
The Beginning and End of the Worlds
A New Meteorite
The South Pass Jetties
Notes on the Consolidation and Durability of the Works, with a Description of the Concrete Blocks and other Constructions of the Last Year
How to Explore for Minerals
Compound Marine Engine
New Marine Railway
Mackenzie's Screw Propeller Assistant
Acoustical Fire-Damp Detecter
A New Rheometric Gas Burner
The Theory of Roller Milling
The Miller, from Gustav Pappenheim's “Popular Treatise on Milling”