The Soldier's Foot
An Important Feature of an Effective Army
An Important Feature of an Effective Army
Animals That Wear Armor, with Remarks on the Different Species and their Habits
A Problem now being Seriously considered in England and Germany
The Making the Great Mirror, and Transporting it up the Mountain
Methods of Evaluation
This is Not A Universe of Dead Atoms, but of Active Energy
An Ingenious Instrument Employed by the Germans
A History of Weather Records, and the Work of the U. S. Weather Bureau