6.40 Problems of Pollution

7.5 Maths - Vector Spaces

7.30 Open Forum

When Roobarb was being Bored then not being Bored

with MICHAEL BRYANT The Dolphin Crossing by JILL PATON WALSH
Today: Boats in the Channel

Nina makes Boris realise that he has as much to learn from the youngest children in the school as they have from him.
Story told by John Westbrook

(Black and white)

Amusement Park Lark
Lippy and Hardy Har Har sneak into the fun house.

Kontakte
21: Wo wohnen Sie?
Complementary radio programme today,
6.30 pm, Radio 3.

Weather BILL GILES

including Grace and Flavour with Michael Smith
Michael Smith 's Saucy Cookbook, 45p, published tomorrow

Mr Lazy and Mr Bump by ROGER HARGREAVES

A programme for children under 5
(Shown on BBC2 at 11.00 am)

with Michael Aldridge Tales from Arab Lands adapted from traditional sources by GERTRUDE MITTELMANN
King Suleyman's palace is guarded by a mighty race called the Jinn. Most are loyal to their sovereign, but one Jinni has ideas of his own. Today: The Wicked Jinni
Pictures by MICHAEL FOREMAN and FREIRE WRIGHT

Semi-final
Michael Rodd introduces extracts from Candleshoe, Seat Island, An Elephant Called Slowly and The Sword in the Stone to test the observation of the winners of the fourth two heats.
There is also the prize-winning live-action entry in The Young Film-makers' Competition.
Directed by PAUL LOOSLEY Produced by JOHN BUTTERY BBC Manchester

Created by MIREK LANG AND PETER LANG

Kenneth Kendall ; Weatherman

Renoir, is that You?
Luiz Antonio Gasparetto is a young South American. He cannot paint - not until up to 30 spirits of dead artists move him. And then he paints in the styles of great masters at the rate of 20 an hour. GASPARETTO is convinced that his remarkable gift, seen here before the cameras for the first time, comes from the spirit world. Does it? Experts discuss his extraordinary case with JAMES HOGG.
Producer BRIDGET WINTER

with Kenneth Kendall and the BBC's reporters and correspondents around the world Weather

Nine documentary programmes which take a close look at the world's most controversial police force in action.
4: The Streets of Hong Kong
The streets are dangerous, and their moods are unpredictable. For overcrowding and humidity make tempers volatile. INSPECTOR BROWN, who deals with Hong Kong's 999 calls, has always to adapt quickly to a rapidly changing scene. For there are no action replays on these streets. He has to decide there and then whether the bomb-call is a hoax, whether to use cs gas against the violently insane man, and whether to risk a charge of indecent assault by man-handling the girl. These are everyday problems. But Brown also has a longer-term problem of his own. He's under investigation by the Colony's anti-corruption commission, and if he's found guilty, it will mean his ruin.
Film cameraman PATRICK TURLEY Film recordist MIKE SAVAGE Film editor BRIAN TOMKINS Producer JOHN PURDIE

Introduced by Harry Carpenter including tonight
The Greyhound TV Trophy from Walthamstow Stadium
On the 20th anniversary of this prestige long-distance event, first run in 1958, BBC outside broadcast cameras bring you live coverage of tonight's three heats. At speeds approaching 40 mph, two greyhounds from each heat will qualify for the Final in two weeks. Commentator HARRY CARPENTER They're Off!
To welcome the new Flat Racing season, which gets under way on Saturday, JULIAN WILSON visits the stables of The Queen's trainers, DICK HERN and IAN BALDING; and Lord Porchester, her racing manager, talks about the Royal horses including Dunfermline, winner of two Classics last season.
Greyhound TV presentation ALEC WEEKS Racing film director BOB ABRAHAMS Producer JOHN PHILIPS
Editor JONATHAN MARTIN

Introduced by DENIS TUOHY Including News Headlines

ROGER MUNK : Trained as a Marine Engineer he is now joint Managing Director of Aerospace Developments Ltd. In the face of a multitude of problems his company is building the first commercial British airship since the ill-fated R101 in 1929. Researcher MARY SPRENT Producer MICHAEL GARROD