Feature

Broody and Non-Broody Hens Produced by Breeding

Natural Gas Chemical Extracts Lubricant

200-Inch Telescope Mirror to Be Poured of Special Glass

First Glances at New Books

Many Found to Be Carriers of Disease-Causing Amoeba

Egypt’s Garden of Eden Invaded by Archaeologists

Front Matter

In Science Fields

Soda Not Secret of Male Sex in Rats

[Photograph]: Twice Pioneer

Adrenal Cortex May Give Resistance to Poliomyelitis

Anatomist Finds Way to Measure inside of Skull