"Sammy Doak" received a notebook marked "Mathematics 3a." The point of this allusion was lost to Satherwaite, for Doak was too busy laughing to explain it. And so it went, and the room was in a constant roar of mirth. Doyle was conferring excitedly with Ailworth across the room. By and by, he stole forward, and, detaching one of the packages from the tree, erased and wrote on it with great secrecy. Then he tied it back again, and retired to the hearth, grinning expectantly, until his own name was called, and he was shoved forward to receive a rubber pen-holder.

Presently, Satherwaite, working around the Christmas tree, detached a package, and frowned over the address.

"Fellows, this looks like—like Satherwaite, but—" he viewed the assemblage in embarrassment—"but I fancy it's a mistake."

"Not a bit," cried Doyle; "that's just my writing."

"Open it!" cried the others, thronging up to him.

Satherwaite obeyed, wondering. Within the wrappers was a pocket memorandum book, a simple thing of cheap red leather. Some one laughed uncertainly. Satherwaite, very red, ran his finger over the edges of the leaves, examined it long, as though he had never seen anything like it before, and placed it in his waistcoat pocket.

"I—I—" he began.

"Chop it off!" cried some one joyously.

"I'm awfully much obliged to—to whoever—"

"It's from the gang," said Doyle.