'I am boring you,' said Psmith, with ready tact. 'Suffice it to say that Comrade Agesilaus interfered with the pterodactyl, which was doing him no harm; and the intelligent creature, whose motto was "Nemo me impune lacessit", turned and bit him. Bit him good and hard, so that Agesilaus ever afterwards had a distaste for pterodactyls. His reluctance to disturb them became quite a byword. The Society papers of the period frequently commented upon it. Let us draw the parallel.' Here Mr Bickersdyke, who had been clucking throughout this speech, essayed to speak; but Psmith hurried on. 'You are Agesilaus,' he said. 'I am the Petulant Pterodactyl. You, if I may say so, butted in of your own free will, and took me from a happy home, simply in order that you might get me into this place under you, and give me beans. But, curiously enough, the major portion of that vegetable seems to be coming to you. Of course, you can administer the push if you like; but, as I say, it will be by way of a confession that your scheme has sprung a leak. Personally,' said Psmith, as one friend to another, 'I should advise you to stick it out. You never know what may happen. At any moment I may fall from my present high standard of industry and excellence; and then you have me, so to speak, where the hair is crisp.' He paused. Mr Bickersdyke's eyes, which even in their normal state protruded slightly, now looked as if they might fall out at any moment. His face had passed from the plum-coloured stage to something beyond. Every now and then he made the clucking noise, but except for that he was silent. Psmith, having waited for some time for something in the shape of comment or criticism on his remarks, now rose. 'It has been a great treat to me, this little chat,' he said affably, 'but I fear that I must no longer allow purely social enjoyments to interfere with my commercial pursuits. With your permission, I will rejoin my department, where my absence is doubtless already causing comment and possibly dismay. But we shall be meeting at the club shortly, I hope. Good-bye, sir, good-bye.' He left the room, and walked dreamily back to the Postage Department, leaving the manager still staring glassily at nothing. 13. Mike is Moved On