Farmers and horticulturists well know that it is in the nature of a heap of couch-grass, when kindled in calm weather, to smoulder for many days, and even weeks, until the whole mass is reduced to a powdery charcoal ash, displaying the while scarcely a sign of combustion beyond the volcano-like smoke from its summit; but the continuance of this quiet process is throughout its length at the mercy of one particular whim of Nature: that is, a sudden breeze, by which the heap is liable to be fanned into a flame so brisk as to consume the whole in an hour or two.
Had the farmer narrowly watched the pile when he went to close the door, he would have seen, besides the familiar twine of smoke from its summit, a quivering of the air around the mass, showing that a considerable heat had arisen inside.
As the railway-porter turned the corner of the row of houses adjoining the Three Tranters, a brisk new wind greeted his face, and spread past him into the village. He walked along the high-road till he came to a gate, about three hundred yards from the inn.
Over the gate could be discerned the situation of the building he had just quitted. He carelessly turned his head in passing, and saw behind him a clear red glow indicating the position of the couch-heap: a glow without a flame, increasing and diminishing in brightness as the breeze quickened or fell, like the coal of a newly lighted cigar. If those cottages had been his, he thought, he should not care to have a fire so near them as that--and the wind rising. But the cottages not being his, he went on his way to the station, where he was about to resume duty for the night. The road was now quite deserted: till four o'clock the next morning, when the carters would go by to the stables there was little probability of any human being passing the Three Tranters Inn.
By eleven, everybody in the house was asleep. It truly seemed as if the treacherous element knew there had arisen a grand opportunity for devastation.
At a quarter past eleven a slight stealthy crackle made itself heard amid the increasing moans of the night wind; the heap glowed brighter still, and burst into a flame; the flame sank, another breeze entered it, sustained it, and it grew to be first continuous and weak, then continuous and strong.
At twenty minutes past eleven a blast of wind carried an airy bit of ignited fern several yards forward, in a direction parallel to the houses and inn, and there deposited it on the ground.