Feature

Insect Species Produce Families All of Same Sex

Find Skin Has No Disinfecting Power

Stories in October Skies

Child in Small Family Held Most Intelligent

Climbing Mount Everest Possible with Oxygen

First Glances at New Books

In Science Fields

The Franklin Stove: “A Classic Invention”

America Really Alberica, Old Czech Paper Shows

Forerunners of Cancer in Digestive Tract Named

Front Matter

Little Coal Dust Needed to Spread Mine Explosion