S.5 Modern Art, Picasso- 6:30 Luminance andSpectroscopy.6.55Biology:Form and Spectroscopy, 6.55, Biology: Form and Function. 7.20 Steels Stars and Spectra. 7.45 Potsdam 4: The Aftermath.

JULIAN WILSON introduces the first of three days' coverage from the main meeting. The first four races are featured, including the prestigious Chester Vase.
2.15 The Lily Agnes Stakes (5f)
2.45 The Ellis Barker Furs and Fashions Handicap Stakes (7f 122y)
3.15 The Ladbroke Racing Handicap Stakes (1m 2f 85y)
3.45 The Chester Vase (lm 4f 65y) Always an informative classic trial, this race has been won in recent years by subsequent Derby winners - Henbit and Shergar.
Commentators PETER O'SULLEVAN JIMMY UNDLEY and JOHN HANMER
Producer KEITH PHILLIPS

What sort of discipline is your child getting at school? Andy Hargreaves looks at how teachers control children in the classroom.
Producer NICK BRENTON
A BBC/Open University production

with David Hepworth , Mark Ellen studio guests Little Steven and the Disciples of Soul, Spandau Ballet On video Joni Mitchell
Director TOM CORCORAN
Producer MICHAEL APPLETON

The first of four programmes Tommy Fair- Boxer
What fervour, what patriotism there was throughout the UK as Tommy Farr stepped into the ring to meet Joe Louis. Could the former Welsh miner halt the ' Brown Bomber' and become Britain's first World Heavyweight Champion of the 20th century?
Written by FRANK KEATING
Film editor GEOFFREY BOTTERILL Producer JEFF GODDARD

Aquarium. An award-winning Bulgarian animation - a humorous fable about our competitive society.

with subtitles, followed by Weather

Wainwright's Guide to the Lake-land Fells is well known to all those who love the Lakes."Painstakingly written by hand over 13 years, they made the author a legend in his own lifetime; but ;Wainwright himself has; always avoided publicity, remaining a totally private man*and : donating all his royalties to a- charity he founded. In tonight's programme A. Wainwright gives his first interview and reflects on the epic work he began 30 years' agof
Narrator David Beam
.Photography DAVID COX JOHN WARWICK 'producer RICHARD ELSE -

continues the season of films starring Hollywood's legendary actress. Also starring Robert Mitchum with Rory Calhoun
Widower Matt Calder and his young son are hard at work developing a farm on the borders of the River of, No Return .ijyhen into their lives comes a young saloon singer and her gambier husband. Monroe ' as the bar-rpom entertainer, Kay Weston , is a perfect match for. the laconic Mitchum in this : rugged adventure set at the time of the 1875 gold rush, and filmed amidst spectacular Canadian scenery.
Screenplay by PRANK PENTON From a story by LOUIS LANTZ Produced by STANLEY RUBIN Utrected by OTTO PREMINGER

Eight programmes about the pleasures of birdwatching pnesented by Tony Sopcr 5: Moving Out
Most birdwatching starts in the back yard, but sooner or latter' you'll want to add new species to your list. Then you must go beyond the:city limits to real bird. watching country. '. Film editor AL GELL
Director DAN FREEMAN
Producer RON BLOOMFIELD

A special report
Afghanistan - a Valley Against an Empire
A remarkable record of the resistance put up by the Mujahidin-the Freedom Fighters-of the Panshir Valley in Afghanistan, against the might of the invading Soviet Army.
Led by their brilliant young commander, Ahmad Shah Massoud they have repulsed the Soviet invaders of their country time after time. With little more than their courage and their unshakeable belief in Islam, they have held off attacks by an enemy vastly superior in numbers and equipment. In order to safeguard their own way of life in some of the most beautiful mountain valleys in the world, the Mujahidin are fighting continuously in an increasingly savage war. Written and narrated by Simon Winchester
Presented for the BBC by DAWN A. SOMPER Series editors ANTHONY ISAACS and PETER JONES

A series of chamber music recitals : given by members of the Gabrieli String Quartet as part of the series celebrating the 150th anniversary of Brahms's birth, and in which each day the number of players increases by one. In the second programme
Kenneth Silito and Keith Harvey are joined by Craig Sheppard in a performance of the Trio in c major, Op 87

by the Conservative Party
10.50-10.55 (Scotland only) A Party political Broadcast by the Scottish Conservative Party

11.30 Einstein's Belief. E = mC' Well, so he said; But what did he mean? Here are the basic concepts of relativity, clearly explained, wjtfiin the framework of Einstein's ptiilosophical belief.
11.55 Calculus. Iteration and Convergence How quickly can a solution be found to a ' difficult ' algebraic equation? Sonic techniques are explored, which provide possible answers.