6.50 Calculus: Behaviour of Functions

7.15 Only in the Mating Season

7.40 Sikhs in Britain

8.5 Buffon at Montbard

8.30 State and Society: Marshall Aid

8.55 Donegal: Tradition and Change

9.20 Social Integration: Children's TV

9.45 Maths: Up to the Mark

10.10 Arts: Visual Music

10.35 Biology: Skeletal Adaptation

11.0 Housing and the Market

11.50 Thomas Hardy and Wessex

12.15 Water for a City: Nottingham

12.40 The Structure of Solids

1.5 Technology: A Solution of Salt

1.30 Geothermal Energy

Introduced by Steve Rider

International Tennis: Stella Artois Championship
No one's making excuses for bad line calls, or manners, but the difference between coming first and second this afternoon at Queen's is £13,000. With the winner taking £25,000, that constitutes one helluva day at the office. Dan Maskell and John Barrett commentate from 2.30.

Cricket: Gloucestershire v Derbyshire: John Player Special League
This has all the makings of a last over, 6.40 finish. They ended up sixth and fourth last season. Bruce Roberts and David Lawrence might be worth waiting in to watch. Peter Walker and Ralph Dellor in the Bristol area from 2.0.

The Royal International Horse Show: Next Championship for the Queen Elizabeth II Cup
Awkward title this for the sponsors but the Queen Elizabeth is one all the girls want to win. Raymond Brooks-Ward and Stephen Hadley were there when Sue Pountain won last time.

Water-skiing
The able-bodied had their day yesterday, here some heavy duty bottle from the less capable, around 4.30.

Motor Racing: Canadian Grand Prix
Don't get excited if this doesn't happen, but the race starts at 5.0 and if it rains at the cricket that's where for a few laps at least you'll go - if not, Grand Prix at 10.20. Murray Walker and James Hunt in any event. Television presentation: Tennis FRED Viner
Cricket ALAN GRIFFITHS Show Jumping
JOHNNIE WATHERSTON
Water Skiing ALASTAIR SCOTT Motor Racing CBC, Canada Studio producer
CAMPBELL FERGUSON
Assistant editor BRIAN BARWICK Producer martin Hopkins Editor JOHN PHILIPS

Where the world of courts and torts is turned upside down. Starring
The Prosecution Never Rests Alex is flattered when DA Jesse Steinberg asks her to help on a big narcotics case and insists that he wants her full input. Unfortunately, he also wants her spare time and social life. Meanwhile,
Carter DeVries prosecutes television star Uncle Jackie - and becomes the most hated man in New York!
Written by KARYL GELD MILLER and KORBY SIAMIS
Directed by PETER BONERZ

The last in the series introduced by Tony Soper with lain Guest
Including this week: Clarion Call
From the far north of Scotland angry voices proclaim the transformation of the Flow Country - a peaty moorland plateau - to serried ranks of conifers. High-speed Pill
In Australia the controversial cull to reduce the kangaroo population may be phased out if attempts to deliver contraceptive pills at high velocity prove successful. Acid Test
In early summer the cliffs of Cornwall are ablaze with wild flowers. But a west country
GP has come up with a theory that casts a shadow over their future, and could lead to a fresh look at British air pollution policy. Editor ROBIN HELLIER BBC Bristol

Down Under, Down Under Twenty years ago
Oxford Terry was an advertising executive in London. Now he's an opal miner in Lightning Ridge, New South Wales.
Forty years ago
Billy Capp was a mouth organ player in Liverpool. Now he's an opal-mining mouth organ player in Lightning Ridge, NSW.
Lightning Ridge is a remote town in the outback and the home of the black opal. Here self-imposed exiles drift in from all over the world to try their luck in Australia's premier lo-tech industry; their equipment dates back to the time of the 'seven dwarfs'.
Meet Terry, Billy and their fairytale friends, Ken the Digger, Julius the Cutter,
Les the Driller and Andy the Finn - the golfing hermit. See the Tivoli Theatre, the Digger's Rest Hotel and the puddling tanks.
Experience. the alternative lifestyle.
Film cameraman ALEX HANSEN
Sound recordist JOHN PRITCHARD Film editor FRANCES PARKER Producer ANDY STEVENSON Series editor tim SLESSOR
• FEATURE: page 4 • CEEFAX SUBTITLES

... Emancipate yourself from mental slavery
None but ourselves can free our minds ...
A portrait of the man who made reggae known and appreciated all over the western world and who refused to abandon a message of personal and political liberation.
Tonight's programme includes a wealth of his finest performances, from early sessions by the original
Wailers to his last rehearsals in Kingston. Interviews with Marley himself and with those who knew him best, including his mother Cedella Booker , his wife Rita Marley , his original partners
Peter Tosh and Bunny Wailer , Judy Mowat and Marcia Griffiths from his backing group the 1 Threes, his art director
Neville Garrick and Chris Blackwell , founder of Island Records.
Film editor GUY CROSSMAN Producers
ANTHONY WALL , NIGEL FINCH Directors
JO MENELL , CHARLES CHABOT An Arena production

The 1986 Formula One World Championship Canadian Grand Prix
After NIGEL MANSELL 'S victory in Belgium three weeks ago, the Formula One cars travel to North America for the first time this season.
Montreal also sees the return of Britain's DEREK Warwick (Brabham) to the Grand Prix scene following the tragic death of Elio De Angelis.
However even Brabham, with their excellent record in Canada, and Ferrari, who were first and second last year, will find it hard to break the domination of the McLaren, Williams and Lotus teams in this year's championship. Commentators
MURRAY WALKER , JAMES HUNT Television presentation CBC. Canada Producer ROGER MOODY

continues a season of films new to television. This week starring Bill Schoppert Karen Landry
The problem with Bill Hendrikson 's love life is that it exists more in fantasy than in reality. The answer? An ad in the personal column to find the perfect mate. 'Single male seeks single female for possible relationship ... no scuba divers please. Send resume and unretouched photo to Box 8723.'
Will it do the trick ...? Will Bill discover a new way to fall in love?
Watch the personals column and find out ...
Written and directed by PETER MARKLE
Produced by PATRICK WELLS
(First showing on British television)
• FILMS: page 13

The Stella Artois Championship from the Queen's Club, London
Highlights of today's final played on the famous grass of Queen's. Will it provide the same perfect pointer to the 1986 Wimbledon champion as last year's did? Introduced by HARRY CARPENTER
Commentator DAN MASKELL JOHN BARRETT and MARK COX