Feature

New Fiber Made from Soybean Protein to Be Used in Autos

Static Electricity Used to Separate Ores

Two New Vitamins $text{L}_{1}$ and $text{L}_{2}$ from Liver, Yeast

High-Grade Fuel Made from Run-of-the-Mine Coal

Babies Imitate without Any Need for Teaching

New Kind of Star Group Discovered at Harvard

New Sex Hormones Aid in Studies of Gland Ailments

Front Matter

Cosmic Rays May Originate in Destruction of Elements

Wild Beasts Have Arthritis but Rats and Bats Are Immune

Audubon 100th Anniversary Marked by Exhibit of Art

Improve Sulfanilamide for More Potency, Less Toxicity