Then he would stride upon the white haired "grad" with hand raised, ominously, but with the merry twinkle still lighting up his eyes; whilst the victim would quail mockingly, with a brighter twinkle in his own. The old professor was known often to have kissed gray haired boys when they met on alumni day. "I have always called you the mule-pupil," he would continue as, arm in arm they strolled back and forth along the broad main corridor. "And do you remember what you said to the class when you found that mule at your desk, in the morning?" the scamp would ask, with a chuckle, perhaps. "No, what?" "Ah, I remember it as though it were yesterday; how you came bustling into the room. You saw the mule. We were all boiling inside. You did not scowl. You did not rant. You did not call down upon our heads the venging hand of a just heaven. You just turned to us as calm as you are now...." The old professor would gurgle here, with rare delight. " ... and said, 'young gentlemen, I perceive that you have already been provided with an instructor quite competent to teach you all you will ever be able to learn!' And then you walked out of the room with a polite 'good-morning.'" Here the former student would roar with laughter. "You don't tell me," the old professor would exclaim. "You don't tell me I said _that_! Well, well, well; that _was_ rather hard on you boys, wasn't it? I'd forgotten all about it. I--I just remembered the _mule_!" "And do you recall," the man who was a boy, again would ask, "how you found all the wood from the big wood-box in the south-wing corridor piled against your door?" The old professor would wrinkle his forehead here and stare thoughtfully at the floor. "No, I don't seem to recollect," he would say. "Well you _did_; we boys had piled it there, of course. Must have been a cord at least. Then we hung around to see what you would do." "And what _did_ I do?" "You began to remove the pile, stick by stick, and to pack them all away in the great wood-box." Here the old professor was always wont to shake with silent laughter. "Well, we stood it as long as we could, and then Billy Green--you remember Billy Green; poor Billy, he was killed at Gettysburg. Billy went up to you, as brave as you please, and said: 'Professor, I don't know who _piled_ this wood against your door but _un-piling_ it is no work for you.' And then he shouted to us, 'come on, boys,' and we fell to and got the wood away from that door in about two jerks of a lamb's tail. But didn't we feel small! Professor, why didn't you have a few of us fired bodily?" "Oh, no, no, my friend," the old professor would perhaps exclaim, quickly. "Expel a boy for being a boy! It is not for you or me, dear sir, to seek to improve upon the handiwork of God!" And there would ensue another laugh, and many more in the three days to follow, and then commencement would be over and the old student would go back to Kansas City and the old professor to his books.