28 FEBRUARY 1925, page 9

The Rotor Ship

H AS a. new and effective method of applying wind to the propulsion of ships at last been discovered ? For hundreds of years there has been no essential change in the design of......

The Evi L Deeds Of Bats

T HE rat is not a likeable fellow. Here in Great Britain he wastes at least £50,000,000 a year by eating foodstuffs, damaging merchandise and buildings, killing poultry, and......