Feature

Cost of Electricity Read Directly in Cents Per Hour

Rocks Disclose Their Ages after Treatment with Acid

Nature Ramblings: Toadstools

Many Failures Do Not Stifle Humanity’s Desire to Marry

Moving Trains Weighed by New Giant Scales

First Glances at New Books

474-Year-Old Family Record Analyzed by Chinese Student

The Toucan: The Magpie of Brazil: “A Classic of Science”

Movies Used for First Time as Aid to Psycho-Analysis

Hundred per Cent Efficient Light Produced in Laboratory

In Science Fields

Choice Prehistoric Apartment Discovered by Archaeologists