Then, turning, he looked again at the wall behind him. The face of it was grey and sombre, but all along the top of it, in the crannies of the coping stones, orange wallflowers and sulphur-coloured snapdragons shone among the haze of feathery-flowered grasses. He looked again at the place where some of the stones had fallen from the coping--had fallen within the wall, for none lay in the road without. The bough of a mighty tree covered the gap with its green mantle from the eyes of any chance wayfarer; but the thief was no chance wayfarer, and he had surprised the only infidelity of the great wall to its trust. To the chance wayfarer, too, the wall's denial had seemed absolute, unanswerable. Its solid stone, close knit by mortar hardly less solid, showed not only a defence, it offered a defiance--a menace. But the thief had learnt his trade; he saw that the mortar might be loosened a little here, broken a little there, and now the crumbs of it fell rustling on to the dry, dusty grass of the roadside. He drew back, took two quick steps forward, and, with a spring, sudden and agile as a cat's, grasped the wall where the gap showed, and drew himself up. Then he rubbed his hands on his knees, because his hands were bloody from the sudden grasping of the rough stones, and sat astride on the wall. He parted the leafy boughs and looked down; below him lay the stones that had fallen from the wall--already grass was growing upon the mound they made. As he ventured his head beyond the green leafage, the level light of the sinking sun struck him in the eyes. It was like a blow. He dropped softly from the wall and stood in the shadow of the tree--looking, listening. Before him stretched the park--wide and still; dotted here and there with trees, and overlaid with gold poured from the west. He held his breath and listened. There was no wind to stir the leaves to those rustlings which may deceive and disconcert the keenest and the boldest; only the sleepy twitter of birds, and the little sudden soft movements of them in the dusky privacy of the thick-leaved branches. There was in all the broad park no sign of any other living thing. The thief trod softly along under the wall where the trees were thickest, and at every step he paused to look and listen.