eer old stone that is," he went on, pointing to a block of limestone rising out of the turf just beneath the wall.
"It looks like a sort of dwarf pillar, but I suppose it is natural."
"Oh, yes, I think so. I imagine it was brought here, though, as we stand on the red sandstone. No doubt it was used as a foundation stone for some older building."
"Very likely." Dyson was peering about him attentively, looking from the ground to the wall, and from the wall to the deep wood that hung almost over the garden and made the place dark even in the morning.
"Look here," said Dyson at length, "it is certainly a case of children this time. Look at that."
He was bending down and staring at the dull red surface of the mellowed bricks of the wall Vaughan came up and looked hard where Dyson's finger was pointing, and could scarcely distinguish a faint mark in deeper red.
"What is it?" he said. "I can make nothing of it."
"Look a little more closely. Don't you see it is an atte