Feature

Nature Ramblings: Mosquitoes and Ducks

Animals of Cooler Regions Larger than Warm-Land Kin

New Lamps Join Familiar Bulbs to Brighten Life

New Swedish Process Freezes Salt from Ocean

Remedy for Influenza Hinted in New Report

U. S. Joins 14 Other Nations Using Robot Radio Alarm

Front Matter

Tandem Propellers for Planes Turn in Opposite Directions

Draw-Casting New Trick in Making Copper Rods

Dead Men’s Heads Carved on Ancient Temple in Peru

Spring Comes

In Science Fields