Seated at a table, the letters spread out in front of him and writing busily on a big sheet of paper was a small red-haired man of middle age. He grunted irritably to himself as he wrote, and every now and then rubbed his nose violently until its hue almost rivalled that of his hair.

Presently he looked up.

“That you, Battle? What you want me down here to unravel this tomfoolery for? A child in arms could do it. A baby of two could do it on its head. Call this thing a cipher? It leaps to the eye, man.”

“I’m glad of that, Professor,” said Battle mildly. “But we’re not all so clever as you are, you know.”