Feature

February a “Perfect” Month of the Simplified Calendar

Front Matter

Robber-Fly Masquerades in Bumble-Bee’s Clothing

Lack of Iron May Cause Common Mental Disease

New Cable Sends 2500 Letters a Minute

New X-Ray Method Reveals Sex before Birth of Baby

Eight Indian Types Found in Cemetery Used 1,000 Years

Nature Ramblings: House Centipede

Explains How “Spirits” Shake Tent in Indian Ceremony

To Study the Mayas by Living with Them

Tropical Fungus Spores Resist Cold as Well as Heat

In Science Fields