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Early Inventors Had Their Troubles

Adding Machines Will Save Astronomers’ Time

Artificial Blizzard Tests Hardiness of Orange Trees

Tuberculosis Deaths Decrease 10 per Cent. in Year Just Ended

Arabian Insect Perfect Feminist

Germs Furnish Growth Promoters for Plants

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Parasite Digest Ant’s Diet of Wood

Sees Airplane as Plague Carrier

Useful Pigment Now Made Electrically

Learns How Pussy Lands Right Side Up