6.25 Biology, Brain and Behaviour
6.50 Your Own Optics Laboratory
7.15 Species and Evolution
7.40 Coventry: What's Another Year Really?
8.5 Psychology: It's a Matter of Opinion
8.30 Measuring the Earth and the Moon
8.55 Social Science: Levels of Meaning
9.20 Maths: Symbols and Equations
9.45 Quantum Theory and Atomic Structure
10.10 Freedom and Plenty
10.35 Man's Religious Quest: Pilgrimage
11.0 Vienna: Stripping the Facade
11.25 Health Choices: Tell Me When it Hurts
11.50 The Effective Manager: The Deep End
12.15 From Petroleum to Polyethylene
12.40 Henry IV Parts 1 and 2: Workshop 1
1.5 Talking to Children
1.30 Maths: Population Modelling
1.55 pm Pages from Ceefax

Valley of the Inca
High in the Peruvian Andes, the remote Cusichaca valley lies at the heart of the ancient Inca empire.
Dr Ann Kendall , the driving force behind the Cusichaca research project which has been working in the valley for six years, has set out to test the idea that the original Inca fields and canals can be made to flourish again after five centuries of decay. Could her mixture of archaeology and engineering dig up the future? Narrator Ray Moore
Horizon editor GRAHAM MASSEY
Written and produced by ROBIN BOOTLE

Bruckner's String Quintet in F
This quintet with its glorious Adagio is as powerful and inventive a work as any of the composer's much better-known symphonies.
The Melos Quartet of Stuttgart is joined by Franz Beyer (viola) in Bruckner's String Quintet in F Last of six programmes
Sound RON ALLAN
Lighting JAMES MAIDEN
Producer mike NEWMAN. BBC Scotland

Nigel Starmer-Smith introduces highlights of yesterday's internationals.

England, having lost their opening game in Scotland, looked for a better all-round performance against the Irish who have already lost their two matches this season.

Wales led by Mike Watkins hoped to continue the improvement shown in their victory over Ireland, faced France, the favourites for this year's championship, who have not won in Cardiff since 1968.

A digest of the news of the week and other world matters of interest seen by news cameras around the world: the interesting, the picturesque, the important and the dramatic, plus a visual commentary for those who cannot hear. with Jan Leeming

Brian Widlake and Valerie Singleton present Britain's most popular financial and business programme. With LUKE CASEY, NICK CLARKE , BILL KERR ELLIOTT and MARK ROGERSON reporting from home and abroad on your money and other people's including this week:
The Offer You Can't Refuse: special offers and cut price goods are a major marketing tool for the supermarkets. It is good news for the customer, but it has brought problems for the grocery industry and the small retailer.
Director DON HARLEY
Deputy editor MICHAEL HOGAN Editor RICHARD TAIT

for the Marley Trophy
In the fifth match in the series today Tom Watson and Greg Norman meet in a head-to-head singles match. Peter Alliss introduces and talks with the players as they negotiate nine selected holes on the King's Course at Gleneagles Hotel in Scotland.
Assistant producer DEREK MARTIN Television presentation
RICHARD TILLING and ALASTAIR SCOTT
Executive producer HAROLD ANDERSON

A series of seven films in which people can let off steam, grind their axe or simply have a chuckle.

A highly successful yet totally untrained artist, Beryl Cook only started painting in her late 30s. Her subjects are mostly women, usually middle-aged and nearly always enjoying themselves. Plymouth, where she lives provides the setting for many of her pictures.
'When I'm out I may see something I love. Then I nearly always know I'm coming back to paint it. I don't think there can be any message in that.'

A series of 13 programmes which tell the story of the theatre. Written and presented by Ronald Harwood 4: Mysteries
Europe around AD 500 - the Dark Ages. Organised theatrical life had crumbled with the Roman Empire. Europe was Christian but the great mass of people were illiterate. The story of Christ had to be made intelligible to them, so Mystery or Miracle plays evolved.
This programme shows how the theatre once more became part of people s lives, with a special reconstruction of The Harrowing of Hell in Sussex, the 1980 York Mystery Cycle which the people of York still perform every four years, and another form of street drama in Italy, commedia dell'arte. Those taking part include:
Michael Elphick , Paul Copley
Ian Saynor , Christopher Timothy Patrick Garland , Eileen Atkins and the Co-Operative Autori of Venice
Film editor MALCOLM DANIEL
Executive producer RICHARD CAWSTON Producer HARRY HASTINGS
Directed by KEITH CHEETHAM if Subtitles on Ceefax page 270

Introduced by Ludovic Kennedy who discusses The Living Planet (BBCl), The Weather in the Streets (BBC2) and Treasure Hunt (Channel 4) with Dr Malcolm Coe , Gillian Tindall and Sir Ranulph Twistleton-Wykeham -Fiennes. Michael Church looks at television's image of the teenager. Director MICHAEL PARKER Producer JOHN ARCHER

with Jan Leeming ; Weather

opens a major season of films new to television starring Edward Woodward Jack Thompson
At the height of the Boer War three members of the Bushveldt Carbineers are court-martialled on charges of murdering Boer prisoners and a German missionary. The action-designed to make them an 'example' - is politically motivated and the proceedings strongly in favour of the prosecution ... This gripping story of injustice proved one of the most powerful and successful of all recent Australian movies.
Screenplay by JONATHAN HARDY DAVID STEVENS. BRUCE BERESFORD
Based on the play by KENNETH Ross Produced by MATTHEW CARROLL Directed by BRUCE BERESFORD
(First showing on British television) • FEATURE: page 14