An Outside Broadcast from the Annual Meeting at Cambridge.

The concepts on which a science is based can change almost beyond recognition during the work of a single generation.
Sir Peter Medawar C.B.E., F.R.S., Director of the National Institute for Medical Research gives his presidential address to the Zoology Section.
From the Lady Mitchell Hall, Cambridge

A programme for children at home.
Repeated on BBC-1 at 1.30
(to 11.25)

A film series starring the master comedian with the mean streak Jack Benny who with this week's guest Jack Jones explores a blackboard jungle!

Club Rugby! The phrase conjures up a traditional picture: a broad-shouldered, essentially masculine and somewhat exclusive company... deeds of valour on the field... prodigious drinking and risque singing in the bar... with the ladies waiting outside, or at home.
Jeremy James savours the atmosphere of a Saturday at the Rugby Club and finds out how the old traditions are standing up amid the social changes of the modern world.
(Repeat)

Britain's finest water skiers Jeannette Stewart-Wood and Robin Beckett demonstrate, on the Ruislip Lido, the simple and intricate art of this growing sport.

by N.C. Hunter.
with Gwen Ffrangcon-Davies as Laura Anson, Robert Flemyng as Julian Anson, Rachel Gurney as Frances Farrar, Felix Aylmer as David Anson, Laurence Hardy as Dr. Farley, Cyril Raymond as Humphrey Caldwell, Peter Collingwood as William Gregson, Elizabeth Benzimra as Elinor Eddison, Gerald Rowland as Toby Eddison and Gene Anderson as Miss Mathieson.
(Repeat)
See page 41

A new series featuring jazz musicians from Britain, Canada, and Australia.
This week from Britain: The Commonwealth Big Band
Introduced by Benny Green.

See page 41

followed by The Weather

Ideas, Personalities, Progress
A report from Cambridge on the day's proceedings at the Annual Meeting of the British Association for the Advancement of Science.
Introduced by David Wilson.

Round off the day with Denis Tuohy, Michael Dean, Nicholas Tresilian, Joan Bakewell and tonight's guests.