To return to Percy. In his part of the front sandbags grew like pebbles on a shingly beach; and from time to time fresh cuts off the trenches were opened to allow for further expansion in the sandbag family. The existing front line in one place had started life as a cut off the old trench, and had gradually been taken into use as a permanency, and it was at this point that he stumbled on the great discovery which was destined to cause all the trouble. How he first stumbled is not recorded; but early one morning Percy FitzPercy could have been seen like a terrier with his nose down a rabbit-hole, lying flat at the bottom of the trench, peering into a noisome and foul-smelling cavity underneath him. "My dear old boy," he remarked, enthusiastically, to a brother subaltern, who was watching the proceeding coldly, "it's an old German dug-out; I'm certain it's an old German dug-out." "I don't care a damn if it is," answered the other, without enthusiasm. "It stinks like a polecat, and is undoubtedly full of all creeping things. For heaven's sake, let's go and get something to eat." Slowly and reluctantly Percy allowed himself to be led away, thinking deeply. Only the week before had the Hun attempted a raid and actually entered the trench close to the spot in question, and here was apparently a ready-made man-trap should he do so again. After breakfast he would explore his find; after breakfast he would himself set to work and labour unceasingly. As I have said, Percy FitzPercy meant well. It is possible that lesser men might have been deterred by the unpromising results of that exploration. Descending gingerly through the hole, which had been widened sufficiently to allow of the passage, Percy switched his torch around the cavity he found himself in. Above his head long rounded timbers, side by side and touching one another, formed the roof, which was in good condition, save in the centre, where the blue sky shone through the hole he had entered by. In one corner stood a bedstead covered by a moth-eaten blanket, while all over the floor crumbling sandbags and old clothes and equipment gave it the appearance of a rag-and-bone shop. In one place the wall had fallen in, a mound of chalk filled the corner, and from a score of vantage points elderly rodents watched with increasing disfavour this unexpected human invasion. Up above in the trench the disfavour was repeated in that picturesque phraseology for which Thomas is famous. "Wot are you a-doing 'ere?" An incensed sergeant rounded a corner, and gazed wrathfully at three privates, each armed with a spade and wearing gas helmets. "Wot 'ave you got them 'elmets on for?" He approached the fatal hole, and recoiled slightly. "Gaw-lumme! Wot's that smell?" "Percy," answered a sepulchral voice. "Our little Perce." "Wot yer mean--Percy? Wot's that 'ole?" A cloud of dust at that moment rose through it, and he recoiled still farther. "Oo's down there?"