Feature

Hormone Aids Muscle Ill

Erratum: Vitamin B₁₂ Aids Anemics

Monkeys Half as Big as Rats Shown in American Zoo

Two Bright Planets Visible

Nature Ramblings: Overlooked Anniversary

Front Matter

Flesh Remains of Ancient Animals Dug up in Alaska

“In-between” Atom Smasher Is Unveiled at Harvard

Volume Information

Opossum’s Diet Shows He Eats Just about Anything

B Vitamin Lack May Cause Hardening of Arteries

U. S. Could Feed Billion