The one adventure of the holidays was the visit to the Roman fort, to that fantastic hill about whose steep bastions and haggard oaks he had seen the flames of sunset writhing nearly three years before. Ever since that Saturday evening in January, the lonely valley had been a desirable place to him; he had watched the green battlements in summer and winter weather, had seen the heaped mounds rising dimly amidst the drifting rain, had marked the violent height swim up from the ice-white mists of summer evenings, had watched the fairy bulwarks glimmer and vanish in hovering April twilight. In the hedge of the lane there was a gate on which he used to lean and look down south to where the hill surged up so suddenly, its summit defined on summer evenings not only by the rounded ramparts but by the ring of dense green foliage that marked the circle of oak trees. Higher up the lane, on the way he had come that Saturday afternoon, one could see the white walls of Morgan’s farm on the hillside to the north, and on the south there was the stile with the view of old Mrs. Gibbon’s cottage smoke; but down in the hollow, looking over the gate, there was no hint of human work, except those green and antique battlements, on which the oaks stood in circle, guarding the inner wood. The ring of the fort drew him with stronger fascination during that hot August weather. Standing, or as his headmaster would have said, “mooning” by the gate, and looking into that enclosed and secret valley, it seemed to his fancy as if there were a halo about the hill, an aureole that played like flame around it. One afternoon as he gazed from his station by the gate the sheer sides and the swelling bulwarks were more than ever things of enchantment; the green oak ring stood out against the sky as still and bright as in a picture, and Lucian, in spite of his respect for the law of trespass, slid over the gate. The farmers and their men were busy on the uplands with the harvest, and the adventure was irresistible. At first he stole along by the brook in the shadow of the alders, where the grass and the flowers of wet meadows grew richly; but as he drew nearer to the fort, and its height now rose sheer above him, he left all shelter, and began desperately to mount. There was not a breath of wind; the sunlight shone down on the bare hillside; the loud chirp of the grasshoppers was the only sound. It was a steep ascent and grew steeper as the valley sank away. He turned for a moment, and looked down towards the stream which now seemed to wind remote between the alders; above the valley there were small dark figures moving in the cornfield, and now and again there came the faint echo of a high-pitched voice singing through the air as on a wire. He was wet with heat; the sweat streamed off his face, and he could feel it trickling all over his body. But above him the green bastions rose defiant, and the dark ring of oaks promised coolness. He