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School Children Should Be Examined for Deafness

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Human Body Grows in Three Spurts

Mind of Human Being Organized before Birth

Interior of Stars Studies

New Ideas of Light Declared Irreconcilable with Past

Germ Theory of Cancer Refuted

Removal of One Idea Would Collapse Civilization, Millikan Says

Heredity Factor in Pernicious Anemia

Metal Welding Methods Revolutionized by New Inventions

Ancient Trade Routes Traced by Amber Finds

Lung Cancer Increases