Feature

History Never Repeats Self Mechanical Analogy Argues

Present Sleeping Sickness Differs from Early Outbreaks

Waste Gas Analysis Tests Auto Efficiency

Small Saber-Tooth Cat Found in Idaho Fossil Bed

[Photograph]: Honey-Baited Trap

Drinking Map of the World

Front Matter

In Science Fields

Nature Ramblings: Sturgeon

First Glances at New Books

Centrifugal Analysis of Blood Indicates Species Relations

Urn Pattern Existed Long before Urns Were Made