6.40 Klein's Unification of Geometry

7.5 Community Theatre

7.30 Earthquakes and Technology

Story, Hang On, the Other Phone's Ringing written and told by J. J. STEWART
Presenters
Carol Leader, Don Spencer

4.50 Six Characters in Search of an Author

5.40 Curriculum Design and Development

6.5 Images of Class

6.30 San Francisco Railway: 1

Ellie Saves the Day
Thanks to J.R., the Ewing family faces financial ruin. And it is left to Bobby to break the worst news of all - even Ellie's beloved South-fork will have to go ...
Written by DAVID MICHAEL JACOBS and ARTHUR BERNARD LEWIS
Directed by GUNNAR HELLSTROM
(Another episode tomorrow at 6.55)

including sub-titles for the hard-of-hearing, followed by Weather

The second of four programmes
A series featuring some of the finest model makers and collectors. This week: the toy theatre collection of Frank Bradley - the best in the world, and Peter Baldwin , an actor, who gives performances with his toy theatre.
Presenter ERIC THOMPSON
Director JENNI BURROWS
Producer PAUL SMITH. BBC Bristol

Tracks on the Oregon Trail
In the 1840s covered wagons carried 30,000 Americans west to find a ' Better Life'. They found it in Oregon, in the beautiful and fertile valleys of the Pacific north west. They learnt to care for their new paradise and passed on that concern to sons and grandsons.
In the 1970s new trails were blazed in Oregon; legislation has made it the most environmentally protected spot in the western world. Modern Oregon was first to clean up its polluted rivers; first to introduce a 55mph speed limit; first to require refunds not only on bottles, but on cans too; first to ban the rip-off can cap; first to give fare-free rides on city buses; first to ban poisonous herbicides. Horizon visits the state that's become the symbol for a new America. Could it be a blue-print for the rest of us? Or will the pioneers' paradise give way to the pressures of the 1980s? Narrator TONY BRITTON
A fascinating and cheering programme
(OBSERVER)
Editor SIMON CAMPBELL-JONES Written and produced by CHRISTOPHER RILEY

A duel of words and wit between Frank Muir
Davina Galica , Tim Brooke-Taylor and Arthur Marshall
Gemma Craven , Russell Harty Referee Robert Robinson
Call My Bluff devised by MARK GOODSON and BILL TODMAM Director ALAN BELL
Producer JOHNNY DOWNES. (Russell Harty with All About Books BBC1 10.35 pm)

Narrated by Fritz Spiegl
While competitors are limbering up for this month's viola competition on the Isle of Man, we take a nostalgic look back at the extraordinary event that marked the island's first venture into the music competition field - the 1978 International Double-Bass Competition and Workshops: Featuring the breathtaking virtuosity of Gary Karr , the film shows what happened to the little holiday resort of Port Erin when 200 bass players dropped in. With RODNEY SLATFORD , JOHN BETHELL , NASH ENSEMBLE, WURZ-BURG DOUBLE-BASS ENSEMBLE, and SCOTTISH CHAMBER ORCHESTRA, conducted by KENNETH MONTGOMERY
It was left to the special crankiness of the English to restore some semblance of originality and gaiety.... a gem
Film editpr IAN PITCH (DAILY MAIL) Producer DAVID BUCKTON

At the Photographers'

With CHARLES WHEELER in New York and PETER SNOW in London.