Marmaduke Muir had meanwhile found his familiar way through the low arch which, piercing the extreme corner of the eastern side of the quadrangle, formed the connecting link between the older part of Drummuir Castle and the new. For the rest, this eastern wall showed blank save for a loophole or two. It was, in effect, simply the back wall of what in Scotland is called the square; that is, the continuation of stables, cow-houses and woodsheds which appertain to a country mansion in the north. It had evidently been built as a wind-screen to the western wing, which, overlooking the river, had been the residential portion of the house before the southern wing had been added to close in the quadrangle. Altogether it was a fine old place, magnificently situated in the slight hollow which dipped between the high old red sandstone cliffs of the Aberdeenshire coast, and the lower yet still high old red sandstone cliffs which for a mile or two formed the eastward bank of the river Drum. Standing still on the grass-plot in the centre of the courtyard a quick ear could detect two water sounds--the rhythmic roll of the waves of the North Sea on the one hand, and the incessant rush of the running river on the other. Marmaduke did not pause to listen. He only felt a thrill of pride in the beauty of the stern old place before he passed through the arch into totally different surroundings. Here were wide well-kept lawns, beds of rhododendrons, then somewhat of a novelty, and in those northern climes ablaze with blossom this middle June. Further afield lay a typical East Aberdeenshire landscape of rolling arable land set with square plantations of wood and dotted at sparse intervals with solid grey granite farm-houses. Behind him, despite its wide portico and Grecian balustrade, the new wing of the old castle looked stern and stubborn as the rest. He stood for a moment on the curving flight of massive steps and drew in a long breath of satisfaction; for right in front of him stretched something that once seen could never be forgotten. People came from far for a sight of the great beech avenue of Drummuir. And what they went out for to see was worth the seeing. A cathedral aisle, not made by hand, solemn, serene. Soft sunlight filtering through a vaulted roof of leaves, wide spandrils of brown branches sweeping to wide arch from the pillars of the mighty tree trunks--a tessellated pavement of shade and shine.