6.25 Drinking Behaviour In Animals S.50 BART 5: Systems Interactions
7.15 Atholdale: a Limestone Valley 7.40 Photoelectron Spectroscopy
8.5 Mechanics and Applied Calculus
8.30 Evolution by Natural Selection
8.55 Making Sense of Society
9.20 Maths: Conic Sections
9.45 The Digital Computer
19.10 Engineering Structures
10.35 Television Technology
11.0 Respiratory Mechanism
11.25 Open Forum
11.50 A Question of Colour
12.15 Industrial Relations
12.10 Kinetics of a Gas Reaction
1.5 Metamorphism in the Italian Alps
1.30 Evolution: Adaptive Radiation

Introduced by Desmond Lynam direct from Royal Troon

from Royal Troon The 111th Open
Golf Championship
Extensive coverage of the final day's play in the Championship, which returns to Troon for the first time since 1973. The defending champion is Bill Rogers of the United States, but his fellow countryman Tom Watson now has three titles to his name, having won in 1975, 1977 and 1980. Commentators
HARRY CARPENTER , PETER ALLISS CLIVE CLARK , BRUCE CRITCHLEY
ALEX HAY and MARK MACCORMACK

from Brands Hatch
The Marlboro British Grand Prix
After a season which has already produced a number of upsets, Britain's John Watson heads the Formula One World Championship. This afternoon he'll be trying to repeat his thrilling win at Silverstone last July, which gave him the second Grand Prix win of his career. Commentators
MURRAY WALKER and JAMES HUNT
Plus news of the day's other sporting events including Cricket scores from the John Player League.
* The above timings indicate only the first of several transmissions Television presentation:
Golf DAVID KENNING. RICHARD
TILLING FRED VINER. JIM RESIDE, ALASTAIR SCOTT
Motor racing JOHN PHILIPS. ROGER MOODY Assistant editor Grandstand JOHN ROWLINSON
Producer Grandstand MARTIN HOPKINS Editor Grandstand MIKE MURPHY

Plus a visual commentary for those who cannot hear. with Jan Leeming Editor RICHARD GAMBLE

Wildlife Classics The Wildlife of New York City A city is a different kind of jungle in which an astounding variety of plants, animals and insects have the necessary resilience and adaptability to survive and prosper.
This film was the last that
Kenneth Allsop wrote.
Let's pause only to salute the wit, the originality, the affection for the subject without which such a programme could never have been hatched. Ken Allsop could put more of himself tnto television than almost anyone else ...
(SUNDAY TELEGRAPH)
Film editor BETTY BLOCK Producer BARRY PAINE
★ Subtitles on Ceefax page 270 • BACK PAGES: 70-11

with Jan Leeming Weather

The last of three programmes A Nightmare of Debt
A report by Nick Clarke with Brian Widlake and Valerie Singleton
Until this year bankers were falling over each other to lend to governments throughout the world. But 1982 has wiped some of the smiles off their faces. Poland has failed to pay a cent of the ten billion dollars it's due to repay this year. And Argen tina 's ability to service its debts is much in doubt. Can the banking system cope with these pressures? NICK CLARKE reports from the most indebted country in the world, Mexico.
Film editor CHRISTOPHER RICHARDS Research BRIAN STAVELEY
Studio director DON HARLEY
Producers SUZANNE FRANKS , WILL HUTTON Editor ANDREW CLAYTON

The world-renowned Welsh tenor in a programme of popular songs, ballads and operatic arias. His guest this evening is Anne Howells
BBC WELSH SYMPHONY ORCHESTRA leader DESMOND BRADLEY conducted by ROBIN STAPLETON Accompanist JOHN CONSTABLE
Designer PAULINE HARRISON Lighting TONY ESCOTT Sound UARRY THOMAS
Producer j. MERVYN Williams BBC Cymru/Wales

featuring motor racings Formula One World Championship The British Grand Prix
The last time a British driver led the table at the British round of the Championship, he went on to win the title. That was JACKIE STEWART in 1973, and in 1982 it is
John Watson who leads by a solitary point as the racers converge on Brands Hatch.
PIRONI'S win at Zandvoort two weeks ago was the worst possible result for WATSON, but turbo power may not be the deciding factor this time. Commentators
MURRAY WALKER JAMES HUNT and BARRIE GILL
Television presentation by JOHN PHILIPS and ROGER MOODY Producer jim RESIDE
Editor HAROLD ANDERSON
Results and reports on Ceelax

concludes a season of films starring one of the screen's most powerful actors.
Tonight with James Coburn Mexico 1913. Juan Miranda , a Mexican peasant turned bandit, believes only in his family and robbery. Sean Mallory , a revolutionary, believes only in dynamite. When the two men meet and join forces the result is highly explosive! Juan is persuaded by his new friend to take an active part in the Mexican revolution, of which they soon become heroes.
Director Sergio Leone combines his usual talent for spectacular action sequences with a wryly humorous view of the participants in this action-filled movie.
Screenplay by LUCIANO VINCENZONI SERGIO DONATI and SERGIO LEONE Produced by FULVIO MORSELLA Directed by SERGIO LEONE Films: page 9