Feature

Saw Replaces Explosives in Coal Mining

Crystal Wonderland

New Ascent Will Try to Pass Heights Reached by Piccard

Front Matter

[Photograph]: Poor Little Mastodon

Nature Ramblings: Too-Dominant Parents

Positive and Negative Electrons Apparently Produced in Pairs

Petroleum Said to Come from Garbage of Sea

Blonde Girl Explorer Mystifies Natives of “Forbidden City”

Glass Eyebrows

Starlight to Help Open Century of Progress

First Glances at New Books