“The men are hard at it, sir, but I’m afraid——”

Jack did not wait for the conclusion of the sentence, but made at once for the loose-box where his hack had been lately bestowed at night, and in a couple of minutes was galloping along the lately-worn “wool-shed track” at some distance behind M‘Nab, who was racing desperately ahead.

Before he reached the creek upon which the precious and indispensable building had been, after much careful planning erected, he saw the great column of smoke rising through the still morning air, and knew that all was lost. He knew that the pine timber, of which it was chiefly composed, would burn “like a match,” and that if not stifled at its earliest commencement all the men upon the Warroo could not have arrested its progress. As he galloped up a sufficiently sorrowful sight met his eye. The shearers, washers, and some other provisional hands, put on in anticipation of the unusual needs of shearing time, were standing near the fiercely-blazing structure, with fallen roof and charred uprights, which but yesterday had been the best wool-shed on the Warroo. The deed was done. There was absolutely no hope, no opportunity of saving a remnant of the value of five pounds of the whole costly building.

“How, in the name of all that’s—” said he to M‘Nab, who was gazing fixedly beyond the red smouldering mass, as if his ever-working mind was already busied beyond the immediate disaster, “did the fire originate? It was never accidental. Then who could have had the smallest motive to do us such an injury?”

“I am afraid I have too good a guess,” answered M‘Nab. “But of that by and by. Did you see any strange men camp here last night?” he asked of the crowd generally.

“Travellers?” said one of the expectant shearers. “Yes, there was three of ’em came up late and begged some rations. I was away after my horse as made off. When I found him and got back it was ten o’clock at night, and these coves was just making their camp by the receiving-yard.”

“What like were they?”

“Two biggish chaps—one with a beard, and a little man, spoke like a ’Talian or a Frenchman.”

“Did they say anything?”

“Well, one of them—the long chap—began to run you down; but the Frenchman stopped him, and said you was too good to ’em altogether.”