7.05 Genetics

7.30 Diffraction: Structure Determination

9.38 Countdown Made to Measure
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10.0 Merry-go-Round The Crocodile
A three-part story
Part 1: Stranger from the Sea .
The Crocodile, an illustrated book based on the series, £1.75 from bookshops
10.23 Maths Workshop: Stage 1 Dominoes and Routes

You and Me Book 2 accompanies the morning programmes, 28p, from bookshops

Weather MICHAEL FISH

with Bob Langley , Donny MacLeod Marian Foster and David Seymour including Other People's Gardens and The Fitness Game with Jonah Barrington
Editor TERRY DOBSON

2.1 Words and Pictures
A new series for 6- and 7-year-olds in the beginning stages of reading. Giddy Goose
Introduced by HENRY WOOLF Puppets ALAN PLATT
Animation BURA AND HARDWICK Producer MOYRA GAMBLETON
2.18 British Social History The Festival of Britain .
2.40 Music in Action Narcissus

with David King
More of a Person Really (in five parts)
David King is an actor - so is his dog!
Today: Dougal

with John Noakes
Peter Purves and Lesley Judd
Assistant editor ROSEMARY GILL Editor BIDDY BAXTER

by HELEN CRESSWELL A serial in five parts
The village of Shoredale was off the beaten track and people tended to pass it by - Jumbo decides to change all this.
4: On the Map
Film sound FRANK BROWN
Film cameraman PETER SARGENT Film editor ALISTAIR MACKAY Producer DAPHNE JONES Director JEREMY SWAN

Down the Hatch
The adventures of Captain Pugwash and his daredevil crew.
Voices PETER HAWKINS
Written, drawn and produced by JOHN RYAN

with Angela Rippon Weatherman

by Anthony Read
Starring John Collin, Douglas Fielding, Ray Lonnen
with Allan O'Keefe

Keeping surveillance on a goods yard full of empty waggons seems a pretty barren exercise - unless you know what's at stake.

Introduced by David Dimbleby Solzhenitsyn in Exile
Alexander Solzhenitsyn , perhaps the greatest living Russian writer, was exiled by the Soviet Government two years ago. He now lives in Switzerland.
Solzhenitsyn has been a teacher, a decorated artillery officer during the war, and a political prisoner in Stalin's camps. He has survived to pour out a massive and bitter indictment of life in the USSR, from the Revolution to the present day, in works like The Gulag Archipelago.
Now Solzhenitsyn has made his first visit to Britain, and in an interview with MICHAEL CHARLTON he talks about his life in the West, what he stands for in the struggle for ideas and human rights in Russia, and how he thinks the Russian revolution went wrong.
Producer ROBIN DENSELOW
Assistant editor DAVID HARRISON Editor PETER PAGNAMENTA

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