Feature

Climbing Mount Everest Possible with Oxygen

First Glances at New Books

First Glances at New Books

Front Matter

Stone Points with Grooves Prove Puzzle to Scientists

Flying to Be Made Safer through New Radio Device

Wounded Maple Tree Eating Own Heart

Earth-Eating Custom Still Practised by Many Tribes

Germ of Smallpox Believed Found by English Scientist

Orang-Utan Excels Other Monkeys in Mental Test

[Photograph]: What Are They?

The Egyptian Schoolboy’s Arithmetic