The removal of the old chimney-piece was not an easy task. If the Hartley boys hadn’t been big and strongly-built, they could scarcely have succeeded in tearing away the woodwork from the wall. But they did do it, and their labours were rewarded by the discovery of the long-lost fortune!

Sure enough the historic “poke” was a pocket or recess between the old bedhead and the main wall. It was really built in the chimney itself, though not in the flue. But this chimney-place, with its wonderfully carved mantel, was never used for fires, and the fortune had remained undisturbed in its hiding-place.

As the boys lifted away the portion of the heavy oak that covered the secret pocket, a rough wall of plaster was seen, and by tapping on it, Sinclair learned that it was hollow.

“Shall we break through?” he said. “I feel sure the money is there.”

“Break through, of course,” cried Bob; “but wait a moment till I lock the doors. This is no time for intruders.”

Bob fastened the doors, and then with a hatchet they broke through the plaster.

And even as the old mortar crumbled beneath their blows, out fell a shower of glittering gold coins and tightly folded banknotes!

The sight was too much for the strained nerves of the watchers. Mabel burst into tears, and Mrs. Cromarty trembled like a leaf.

The boys broke into shouts of joy, and Patty scarcely knew whether to laugh or cry. But in a moment they were all congratulating each other and showering praises on Patty for her cleverness in the matter.

“It’s ours! It’s ours!” cried Bob. “It’s Grandy’s, to be sure, but it belongs to old Cromarty Manor, and we’re all Cromartys. Patty, you’re hereby adopted and made one of us.”