'And what might you have been up to?' he inquired coldly. 'This man says you hit him.'

Psmith waved the matter aside.

'Purely in self-defence,' he said, 'purely in self-defence. What else could the man of spirit do? A mere tap to discourage an aggressive movement.'

The policeman stood silent, weighing matters in the balance. He produced a notebook and sucked his pencil. Then he called the conductor of the tram as a witness.

'A brainy and admirable step,' said Psmith, approvingly. 'This rugged, honest man, all unused to verbal subtleties, shall give us his plain account of what happened. After which, as I presume this tram—little as I know of the habits of trams—has got to go somewhere today, I would suggest that we all separated and moved on.'

He took two half-crowns from his pocket, and began to clink them meditatively together. A slight softening of the frigidity of the constable's manner became noticeable. There was a milder beam in the eyes which gazed into Psmith's.

Nor did the conductor seem altogether uninfluenced by the sight.

The conductor deposed that he had bin on the point of pushing on, seeing as how he'd hung abart long enough, when he see'd them two gents, the long 'un with the heye-glass (Psmith bowed) and t'other 'un, a-legging of it dahn the road towards him, with the other blokes pelting after 'em. He added that, when they reached the trem, the two gents had got aboard, and was then set upon by the blokes. And after that, he concluded, well, there was a bit of a scrap, and that's how it was.

'Lucidly and excellently put,' said Psmith. 'That is just how it was. Comrade Jackson, I fancy we leave the court without a stain on our characters. We win through. Er—constable, we have given you a great deal of trouble. Possibly—?'

'Thank you, sir.' There was a musical clinking. 'Now then, all of you, you 'op it. You're all bin poking your noses in 'ere long enough. Pop off. Get on with that tram, conductor.' Psmith and Mike settled themselves in a seat on the roof. When the conductor came along, Psmith gave him half a crown, and asked after his wife and the little ones at home. The conductor thanked goodness that he was a bachelor, punched the tickets, and retired.