Some Damp Reflections, Present Striking Use of X-Ray in Metallurgy and more

Leather from the Sea

Giant Dwellers in the Water Who May be Called Upon to Make Good the Shortage of Hides

Ernst Heinrich Haeckel, 1834-1919

The World's Ranking Biologist, and Last Survivor of the Darwinian Period

Back to the Land

California Pioneers the State Land Settlement Plan

Piercing the Mountain Barrier Between France and Spain

Two Difficult Pieces of Railroad Engineering now being Projected through the Heart of the Pyrenees

Our Technical Achievements in the Great War--IV

Providing and Forwarding Food, Clothing and Equipment for our Armies

World Markets for American Manufactures

A Department Devoted to the Extension of American Trade in Foreign Lands

Legitimization of Soya Bean Oil