4: The Molecular Basis by SIDNEY BRENNER of the M.R.C. Unit of Molecular Biology, Cambridge
The previous speakers in this series have stressed that the development of an embryo is a matter of large-scale organisation. But what is organised is a mass of molecules. Dr. Brenner describes some of the latest ideas of how molecular activity can control the emergence of form and pattern.

La Piemontoise (Les Nations) played by the ALARIUS ENSEMBLE of Brussels Charles McGuire (flute)
Janine Rubinlicht (violin) Wieland Kuyken (viola da gamba)
Robert Kohncn (harpsichord) Second broadcast

An enquiry by W. E. J. MCCARTHY
Research Fellow in Industrial Relations, Nuffield College, Oxford
Every year there are about 2,500 strikes in Britain. The great majority occur in a very few industries. In part, this can be explained by the characteristics of the strike-prone industry; for example, the uncertainty and danger of the work of the coal miner. But even in such an industry some work-places arc noticeably more strike-prone than others.
In this enquiry, W. E. J.
McCarthy examines, with the help of recordings with management, union officials, shop stewards, workers, and industrial relations experts, the reasons for this uneven distribution of strikes. He considers further the relevance of this to the more general problems of strike action. Produced by Richard THOMAS
To be repeated on June 9

Sir Adrian Boult talks about Elgar as a conductor and introduces gramophone records made in 1930 of Elgar's Symphony No. 1, in A flat major played by the London Symphony Orchestra conducted by The Composer

Translations from the Chinese Selected and introduced by DENIS GOACHER
Readers:
HUGH BURDEN OLIVE GREGG and DENIS GOACHER
Translations from the Provencal: May 31