Considers suggestion that Creed may gve up her appointment 'at the College... wise', and that she should also give up her blood-bank work. Discusses example given by Creed of the cameleon as an animal with interesting sensory nerves and muscles: 'I once saw a cinema-film of C., on a branch regaling itself, with deadly speed + precision om flies within reach.'Discusses the problem of isolating the 'muscular' sense in the cameleon's toungue. Suggests vocal chords would be more amenable to investigation. On a (series of?) lectures given by Adrian at Magdelen.