The professor left his chair, and Alec springing on the desk, swept the snow from the ceiling.
He then wiped the seat with his handkerchief and returned to his place.
The gratitude of the old man shone in his eyes.

True, he would only have had to send for the sacrist to rescue him; but here was an atonement for the insult, offered by one of the students themselves.
"Thank you, Mr Forbes," he stammered; "I am ek-ek-ek--exceedingly obliged to you." The professor was a curious, kindly little man--lame, with a brown wig, a wrinkled face, and a long mouth, of which he only made use of the half on the right side to stammer out humorous and often witty sayings--at least so they appeared to those who had grace enough to respect his position and his age.

As often as reference is made in my hearing to Charles Lamb and his stutter, up comes the face of dear old Professor Fraser, and I hear him once more stammering out some joke, the very fun of which had its source in kindliness.

Somehow the stutter never interfered with the point of the joke: that always came with a rush.

He seemed, while hesitating on some unimportant syllable, to be arranging what was to follow and strike the blow.
"Gentlemen," he continued upon this occasion, "the Scripture says you're to heap c-c-c-coals of fire on your enemy's head.