Tilting Grain Cars in All Directions to Empty Them, The Roger Bacon Manuscript and more

America's Greatest Dam

The Muscle Shoals Project on Which Congressional Economy Is About to Force a Halt

Looking Backward Four Thousand Years

The Story of a Digger's Luck That Opened an Egyptian Wonder House

Fuel Conservation Opinions--I

What Leading Consumers of Fuel Have to Say About the Present and the Future

Cold Vulcanization of Rubber

A New English Process with Many Advantages Over the Old Ones

Machine-Made Window Glass

How the Great Sheets of This Difficult Material Are Made and Handled

How to Tell Birch, Beech and Maple Apart