Sledges and dug-out canoes may seem clumsy ways of carrying goods or of travelling, but in their own day they were great inventions. From the sledge grew the wheeled cart, leading in time to trains and motor cars, and from the dug-out canoe there grew in time the ocean liner.
Introduced by Arthur Garratt.
(Recording of the programme shown on April 22)
(to 11.45)