Feature

First Anti-Influenza Serum Is Produced in Horse

Gulf Stream Really Does Not Originate in Gulf of Mexico

Vitamin Structure Secrets Probed with Ultraviolet

Find New Rickets-Preventing Substance Not Vitamin D

Big Tree 2,000 Years Old Crashed after Windstorm

Nature Ramblings: Land-Saving Roots

Discover New “Factor” of the Pituitary Gland

First Glances at New Books

Back Matter

Daily Cosmic Ray Variations Demonstrated

Nature Ramblings: Whence Hallowe’en?

Perpetual Ice Age May Grip the Outer Planets