"I can see some portholes, with guns pointing out,—and—O, and now I see a monstrous great gun, looking over this way, from one of the highest platforms. I believe it is a gun."

"I suppose it must be Mons Meg," said Mr. George.

"Mons Meg?" repeated Rollo. "I'll get a glass and see."

"Yes," said Mr. George. "There is a very famous old gun in Edinburgh Castle, named Mons Meg. I think it may be that."

"I can't see very plain," said Rollo, "the air is so thick with the rain; but it is a monstrous gun."

Just at this time the waiter came into the room to ask the party if they would have any thing to eat.

"Yes," said Mr. George, "we will. Go down with the waiter, boys, and see what there is, and order a good supper. I will come down in fifteen minutes."

So the boys went down, and in fifteen minutes Mr. George followed. He found the supper table ready in a corner of the coffee room, and Rollo sitting by it alone.

"Where is Waldron?" asked Mr. George.

"He's gone to the circulating library," said Rollo.