7.40 Engineering Mechanisms

8.5 Into the Earth

8.30 M101/4 Functions

8.55 Guernsey

9.20 Seven Card Study

9.45 The Moonies

10.10 Sin (a + fi)

10.35 Data in the Computer

11.0 Pelican Crossings

11.25 Demographic Crisis

11.50 Social Psychology Laboratory

12.15 Cues and Schemas

12.40 Impacts of Mining

1.5 Project Famous

1.30 Ecology

1.55 Maths: Differential Equations

2.20 The £5,000-million Industry

2.45 Calling the Tune

3.10 Miracles at Lourdes

3.35 The Interatomic Forces

4.0 Reading Development

4.25 20th-century Poetry

4.50 Skye, the Field Evidence

Gentlemen, Lift Your Skirts
The tiny Williams team from Didcot won every championship last year with their skirted racing cars. Now the Paris-based ruling body of the sport has banned the skirt and thrown this new technology into disarray. Horizon spent the winter with Williams and their World Champion driver Alan Jones. What is the essence of a modern racing car? How can they improve the performance for 1981 - with skirts lifted?
Narrator MARTIN JARVIS
Editor SIMON CAMPBELL-JONES
Written and produced by PATRICK UDEN

A digest of the news of the week and other world matters of interest seen by news cameras around the world; the interesting and the picturesque, the important and the dramatic, plus a visual commentary for those who cannot hear. with Jan Leeming
Editor RICHARD GAMBLE
Magazine for the deaf on Ceefax p 169

Presented by Brian Widlake and Valerie Singleton Including this week
The New Property Boom ?
With interest rates coming down, investment in office property is once again looking attractive. The last property boom of the early 1970s led to a spectacular crash. John Watkinson reports on the new boom and the likely outcome.
ProducerALAN SCALES Editor DAVID LLOYD
MONEY MATTERS: page 85

Search for the World's Deepest Cave
In the remote jungles of Papua-New Guinea, immense rivers, swollen by tropical rains, bore through vast mountain ranges.
In 1979 an Australian-led expedition set out to explore one of those rivers, the Atea, downward from the point where it disappears with a thunderous roar into the depths of the earth. For a month they probed through echoing caves as large as cathedrals and tunnels so tight it was impossible to take a full breath. They discovered more than 20 miles of caves; but could they prove it to be the deepest cave in the world?
Film cameraman GARY STEER Producer JOHN DAVIS
Presented for the BBC by SIMON NORMANTON
Series editors ANTHONY ISAACS and PETER JONES

Weather

Lee's Team v Fuzzy's Team for the Marley Trophy
Tonight Lee Trevino and Fuzzy Zoeller do without the assistance of the celebrities as they meet in a head-to-head singles match in the fifth programme in this series. Peter Alliss commentates and talks with the players over nine selected holes on the beautiful King's Course at Gleneagles Hotel in Scotland.
Television presentation
RICHARD TILLING and ALASTAIR SCOTT Producer DAVID KENNING

A series on works of art dating from the Renaissance to the present day. Under the theme of Bathing, tonight's painting is: Cezanne (1839-1906)
Les Grandes Baigneuses at the National Gallery, London in which the great French post-impressionist artist, to make life more permanent, attempts to group his nude bathing figures into a strange pyramid shape. Written and presented by Anita Brookner
Director KENNETH CORDEN
(Tomorrow: Matisse's ' Bathers by a River

1: Moss Side
Moss Side, like Rampton, Broad-moor and Carstairs, is one of Britain's ageing special hospitals. A state institution in which people defined as violently subnormal and criminally insane are isolated from the rest of us.
In the first programme ever filmed inside a special hospital, Eric Rob son reports on the ' lifers ' of Moss Side - some convicted of horrific crimes, others, in the same wards, guilty of nothing more than being an administrative nuisance.
Patients as young as 12 and as old as 80, are side by side in a hospital where security, not treatment, appears to be the priority. Film cameraman DAVID cox Film editor BRUCE RAWLINGS Director GERRY TROYNA
Producer GERRY NORTHAM
Editor ROGER LAUGHTON BBC Manchester
(Part 2: ' Park Lane ', next Tuesday at 10.30 pm)