“The owner of this ancient and half-ruined pile of stone and make-believe rocks,” Arthur told the doubter, “couldn’t find a purchaser in a coon’s age.  Who would ever want to come away up here to bury themselves from civilization, and in such a silly old rookery as this?  Well, it was one chance in a thousand that a nervous wreck like your aunt heard of it.”

“Don’t worry, Alec, you’ve got a snap, believe me,” chuckled Stallings; and then unable to longer resist a certain alluring limb which he had been eying longingly for some little time, he bolted up the trunk of the overspreading tree, to hang by his toes, and swing daringly to and fro as some of them had seen a yellow-headed, green-bodied poll-parrot do from his perch.

Alec continued his work, and from time to time announced that every roll was indeed turning out superbly.  No one had ever seen him quite so happy.  The possession of a lens that did better work than anything he had ever known in all his experience was enough in itself to make his boyish heart thrill with joy.  And then the singular character of the film subjects added to the sense of satisfaction, for they were sure to enhance the attractiveness of his collection, as well as please Aunt Susan immensely.

It must have been about one o’clock when the boys received their first rude shock.  Hugh had just been thinking of giving orders for another walk in the direction of the deserted building about a quarter of a mile away.  Alec had finished his work and had the well-developed films hanging to dry, securely fastened to his stout cord with snap clothes-pins, so there was no danger of any unfortunate catastrophe happening to them before they were thoroughly dry.

“Listen, will you?” suddenly exclaimed Monkey Stallings, sitting bolt upright, and raising one hand impressively.

“Oh, my stars! what do you call that?” gurgled Billy.  From the manner in which the color deserted his ruddy cheeks one might have imagined he feared they were about to be attacked by a host of savage pirates bent on plunder.

Alec and Arthur could also be seen to stare vacantly at the distance while they strained their ears to listen.  As for Hugh himself he found it hard to believe his senses, for the absolute quiet and dead calm brooding all day long over that retired spot in the wilderness had been rudely shattered by a most astonishing noise as of many hoarse voices, making a jumble and roar of sound unlike anything save the confusion of battle.

It rose, it died away again, and then once more swelled to an amazing extent, after which it finally stopped as suddenly as it had begun.

Five scouts stared at each other.  Billy rubbed his eyes as though he really began to believe he must be asleep, and passing through a vivid dream bordering on the nightmare.

“Hugh! what can it be?” demanded Alec, a bit pale with sudden excitement, for which in truth he could not be at all blamed under the circumstances.