6.5 Orpheus Bntannicus. 6.55 Geology: The Captian Reef. 7.20 Things Present - Times Past. 7.45 History of Mathematics.

In the second seasonal entertainment programme, NOOR JEHAN and TALAT MAHMUD present two songs. YESUDAS sings in Tamil, SHARON entertains with a disco number, GUNVANT PANDYA sings a modern Gujarati song and ALKA RAKYAN performs a Rajasthani folk dance.
Producer yousup AZIZ
Executive producer ASHOK RAMPAL BBC Pebble Mill

Story: The Fox and the Crow (An Aesop fable) Presenters
Chloe Ashcroft , Ben Bazell
(Repeat. Repeated on BBC1 at 4.20 pm)

How inflexible is the caste system? Can members of lower castes improve their status? The programme looks at how members of an untouchable leather-working caste have formed themselves into a sect to improve their social standing.
Producer RICHARD CALLANAN
A BBC/Open University production

Football Association Coaching: Tactics, Skills
2: Shooting (1)
Coaches BOBBY ROBSON , GEOFF HURST TERRY VENABLES , CHARLES HUGHES Players KEVIN KEEGAN
TREVOR BROOKING , RAY WILKINS
PETER SHILTON , LUTHER BLISSETT
Supporting action showing the close relationship between coaching, practice and performance.
(Part 3 tomorrow at 5.40 pm)

Selected episodes from this American 50s comedy series starring
Topper's Spring Cleaning
Spring cleaning time spells trouble for poor old Topper, especially when ' helpful' ghostly George invents a vacuum cleaner that also mixes martinis!
Produced by JOHN w. LOVF.TON

from The Royal Albert Hall , London
In the last of four programmes, Ray Moore introduces more highlights from the Schools Prom.
Today he visits Coventry School of Music and also meets members of the independently-run OCHOS Rios STEEL BAND from Rugby.
Presented by music FOR youthin conjunction with COMMERCIAL UNION ASSURANCE Assistant producer MICHAEL KERR Producer KEN GRIFFIN

with subtitles, followed by Weather

The last of ten films in which Magnus Magnusson explores the Viking world.
Here King Harold is Killed
1066: The Battle of Hastings - date and an event etched on the minds of every English man and woman. Less familiar is the convoluted series of events which led to the death of Harold of England and the vital role the Vikings played in his real life saga.
In the final episode of Vikings! MAGNUS MAGNUSSON unravels this complex skein of Viking intrigue which led to the conquest of England by the northmen of Normandy. The evening of 4 October 1066 effectively marked the end of the Viking Age. With COLIN BLAKELY
Music by JACK POINT
Series adviser PROFESSOR P. B. SAWYER Producer RAY SUTCLIFFE
Series producer DAVID COLLISON

June 1981. Gerry Cottle 's circus Is sinking into the mud of a wet summer.
But Cottle has seen battered pop star, Gary Glitter. The plan is to build the circus around Glitter's outrageous mix of high camp and deafening rock. But there are only 14 days to complete the marriage.
Executive producer ROGER MILLS Producer JACK PIZZEY

Nefertiti and the Computer
Nefertiti was the most beautiful and famous of queens of ancient Egypt. Was she also one of the most powerful? A remarkable research project strongly suggests this was so. At Karnak in Egypt, 3,300 years ago, the heretic pharaoh Akhenaten, husband of Nefertiti, built a vast and brightly painted temple for his new religion. After his death the priests of the old religion hastened to destroy it, leaving only some 45,000 carved stone blocks scattered in the core of the later monuments as witness to its short-lived glory. In the early 1970s Ray Winfield Smith, former US diplomat and general, directed a project, which by use of a computer has rediscovered for the first time the nature and shape of Akhenaten's temple complex. As well, it produced a quite new assessment of Nefertiti's status and importance. Introduced by Magnus Magnusson
Directed by PAUL JORDAN
Produced by PAUL JOHNSTONE

by MRS HENRY WOOD adapted by PHILIP MACKIE
High passion and drama as the second part of this tragic story of murder and deceit and star-crossed lovers moves relentlessly towards its fateful ending.
(Repeat. For full details see page 41)

starring George Melly with John Chilton 's Feetwarmers
The irrepressible jazz entertainer George Melly performs on stage in his inimitable manner numbers that include ' Makin' whoopee' and Fats Waller 's 'The joint is jumpin' '. George's special guest is the legendary piano player and vocalist Memphis Slim. featuring JOHN CHILTON (trumpet) COLIN BATES (piano) BARRY DILLON (bass)
CHUCK SMITH (drums)
Recorded at the Theatre Royal, Bury St Edmunds Musical director JOHN CHILTON Sound BARRIE BAWES
Lighting JOHN STERLING
Designer BARRY NEWBERRY Producer SIMON BETTS

Stars from 12 countries devoted their Easter to the Wembley Arena, to appear on stage at this year's International Festival of Country Music. Join David Allan for tonight's highlights which cater for a wide variety of musical tastes.
Featuring Jim and Jesse John D. Loudermilk
Suzanne Prentice , Porter Wagoner and Jimmy C. Newman
Directors SIMON BETTS
DAVE PICKTHALL , DAVE ROSS Producer DAVE PERROTTET

11.50 Earthquakes (4). In California one method of anticipating the effect of an earthquake Is to carry out full-scale simulations. Lessons are drawn which suggest new types of legislation.
12.15 Display and Recording
Displaying Instantaneous control data on television screens or making permanent records of time-varying signals on chart recorders are two key devices needed to control industrial processes.