Introductory talk by MICHAEL SWANN , F.R.S. of the University of Edinburgh on a new theory about the regulation of population size which may explain the origin of social systems
The author of the theory Is the Professor of Natural History in the University of Aberdeen. V. C. Wynne-Edwards, and it is set out in his book Animal Dispersion in Relation to Social Behaviour.

JANET BAKER (contralto) ERNEST LUSH (piano) Das Zugenglocklein
Auf dem Wasser zu singen
Die Gestirne
FruhlinKsglaube
Der Tod und das Madchen
Der Jüngling und der Tod
Schwanenwesang
Die tinge Nonne Fourth of six programmes of his songs

— 2— Three scientists discuss Professor Wynne-Edwards's theory and its implications regarding the origin of social systems:
J. M. CULLEN
University of Oxford JOHN MAYNARD SMITH
University College, London
J. Z. YOUNG
University College, London with MICHAEL SWANN In the chair followed at 9.30* by comment by the author of the theory: V. C. WYNNE-EDWARDS
Professor of Natural History in the University of Aberdeen

Sonata in B minor
CLIFFORD CURZON (piano) on a gramophone record

by Eugene lonesco translated by BERNARD FRECHTMAN
A row takes place between a man and a woman in a seemingly conventional bedroom setting; but outside a battle is raging, frequently interrupting the domestic Quarrel.
Other parts played by. Margaret McCluen , Joe Stern * and Anthony Viccars
Special effects by the BBC Radiophonic Workshop
Produced by R. D. Smith Third broadcast

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