Transatlantic Travellers
Edited and introduced by Kenneth Williamson
Since man first crossed the Atlantic he has accidentally brought many plants and animals to this country, where they now live in a wild state. But various organisms-bulterflies, marine animals, and plant seeds-are believed to make the Atlantic crossing unaided by man.
Roy FRENCH , DAVID McCLINTOCK
ALASTAIR Stephen and Eric ENNION discuss this problem with KENNETH WILLIAMSON
Produced by Jeffery Boswall