Feature

Whooping Cough May Have Dual Personality

Nature Ramblings: Woolly Bears

Bacteria Made to Change Forms by Change of Food

Mt. Washington Station Begins Work for Winter

Front Matter

Cosmic Rays May Be Emitted When Magnetic Poles Combine

Milk Pasteurized by Conducting Electricity

Hippodrome Big as Football Stadium Found in Antioch

Plates for Star Pictures Should Be Kept on Ice

Dogs Are Just Beginning Evolutionary Loss of Toes

Parrots Quarantined in Infected Areas

Appearance of Age Sprayed on Copper