6.40 Physiology: Experiment

7.5 The Joule-Kelvin Effect

(Full details on BBC1 at 4.0 pm)

5.25 Biochemistry: Radio Isotopes

5.50 The Oceanic Crust

6.15-6.40 Animal Behaviour

7.5 Quantum Theory

Tonight, and every night Robin Day follows the News Summary with questions to a leading personality behind the day's headlines. Weather
Over to you, Robin: page 7

Decorative Enamels: a visit to a small Staffordshire firm who have recently revived the exacting art of decorative enamelling, appropriately in one of the industry's most famous locations - Bilsten.
Expert and collector SUSAN BENJA MIN shows the variety to be found in 18th- and 19th-century enamels. Arthur Negus answers questions Introduced by Hugh Scully
Directors PAUL SMITH , TONY HUNT Producer ROBIN DRAKE
Editor JOHN KING (Bristol)

Trevor Philpott reports on The Hospital: The Young Doctors Each year more students apply for admission to Guy's medical school than to any other in Britain. The hospital can be highly selective, in accepting students and in the ones they keep as doctors. Staff doctors at Guy's should have the medical world at their feet, and the rosiest of prospects. But do they?
The Young Doctors traces their progress and their attitudes to medicine as they work their way through the hospital system to senior registrar and eventually to consultant. It finds them full of fears - for themselves and their families, the quality of their work, and for the future of the hospital itself,
Film cameraman MIKE SPOONER Film editor RICHARD DENTON
Assistant producer MICHAEL MABER Written and produced by TREVOR PHILPOTT

Commentary by John Crosby
Moze and Addie Pray are well-known to cinemagoers as the travelling confidence tricksters in the highly successful feature film Paper Moon. Next week they start their adventures on BBC2. Tonight's programme talks to Moze and Addie, alias Chris Connelly and Jodie Foster , to find out about those days back in the 30s when the people of America maintained a sense of gaiety despite the depression, and when all the duststorms in the land could not put a cloud over Busby Berkeley. JOHN CROSBY , a mid-West boy himself in the days of Moze and Addie, adds his own comments and memories.
Producer PAT PEARSON

Judy Parfitt as ' E. Nesbit ' by KEN TAYLOR with The story of the author of The Railway Children who lived in a menage-a-trois with her husband and his mistress.
Producer MARK SHIVAS
Director JAMES CELI. AN JONES ‡ Book, 45p, from bookshops
Other times, other ways: page 4

David Frost talks to Lord Hill of Luton on the eve of publication of his candid and often controversial broadcasting memoirs Behind the Screen. As Chairman of the ITA and then BBC, Lord Hill was for ten years the most powerful man in British broadcasting.
Tonight, for the first time, he speaks freely about his clashes with politicians, and his views on television and broadcasters.
Over to you, David: page 6

As long as you can throw a flip-flap
Fifty years ago no self-respecting British variety theatre would mount a show without tumblers. In 1974 only one full-time troupe, THE HERCULEANS, is still working in Britain and JOHNNY HUTCH , their 61-year-old leader, has long since come to terms with the nomadic life. He works at home during the winter, but, each summer he crosses the Channel for circus work abroad.
Producer PETER CARR

David Holmes ; Weather

RICHARD BEBB reads Reveillt from ' A Shropshire Lad ' by A. E. HOUSMAN