He, I think, never did experi- really- he did- long, long ago he may have done in the first part of his life, he may have done a little bit of biochemistry, but he was interested in enzyme kinetics. He was always interested in the theoretical side rather than the practical side. Then in the physiology, I think he participated only as a planner and occasionally with the experiments, doing- being the subject of the experiments. He was never the person who twisted the knobs on the oxygen Did he have a group? Were there people working for him? So, he had a little, a tiny little group, Helen Spurway, Jim. During the war they had plans to build a larger group, but it never came to anything. I think he was profoundly not a group leader, actually. He was- he wasn't that supportive of other people, I don't think. Well- much his most distinguished student was Maynard Smith, but I don't think John Maynard Smith ever did an experiment with him. That wasn't their style. I think they were more interested in the natural world- He was a graduate student of J.B.S's? A graduate student, yes. Well he was an exceptional graduate student, Maynard Smith, because he had been- during the war he'd been an engineer during the war- a mathematical engineer- as a stress man for an aircraft company. I don't actually know exactly how he fitted in with Jack, but they were very close friends. You know, two Etonians again.