English Multicycles for the Blind, A Chapel on a Motor Truck and more

Discovery of the Infantile Paralysis Germ

Lightning Calculations, The Current Supplement and more

Extracting Roots of Numbers by Inspection

Brucker's Balloon Trip Across the Ocean, Protection of Ocean Liners by Subdivision

By Our Berlin Correspondent

Babylonian Excavations by the Germans

How Nebuchadnezzar and his People Lived

The Decline of Native Forest Trees in Cities, How the Indians Harvest Wild Rice

Some Means of Prevention