Feature

First Aircraft Lands at Chichen Itza Ruins

Powerful Magnet Attracts Non-Magnetic Substances

All Vitamins Contained in Ordinary “Square Meal”

Better Spark Plugs Sought on Lonely Mountain Peak

Rocks in Utah Canyon Yield Seaweeds of Primeval Date

Front Matter

New Discoveries of Radium Made in Canadian Northwest

Mummies in Painted Masks Found in Egyptian Graves

Poison Tablets Fatally Mistaken for Aspirin

New Technique of Science Education to Be Introduced

[Photograph]: The Brass Brain

Vitamin A Found Kin to Artificial Violet Perfume