Feature

New Oil to Be Obtained from Used Oil

Iron Known to Primitive Man Says Harvard Scientist

Free Verse Has Own Form

Stickiness of Clay Useful in Warfare against Insects

Astronomer Wants New Check-up on Einstein

December 31 Only Twelve Hours Long to Astronomers

Sulphur Found Ideal Apple Spray

Scientists Reports Results of Adventure in South Seas

Queer Customs of Eskimo Related by Physician

Less Heat from Sun during an Eclipse

Scientist Doubts Franklin Flew Kite in Thunderstorm

Presidential Address at American Association Calls for Conservation