Feature

New Zeppelin Is Described by American Airship Expert

Urges Breeding for Animals but Not for Human Beings

French Steamer in Atlantic to Supply Weather Data

In Science Fields

Grasshopper War Due to Break along Wide Front in West

Racial Minorities, Not Those of Culture, Problem in U.S.

New Service to Prevent Bibliography Duplication

Two Eclipses

Nature Ramblings: Cats and Dogs

Chemicals Produce Reaction in Non-Tuberculous Animals

First Glances at New Books

Front Matter