"And that the centre of the mound corresponds to the central or nearest point of the curve?"
The doctor nodded assent.
"Now am I right in thinking that anything occurring at this central point would be unseen from the road?"
"Quite right. The mound rises higher than the road, and its length shuts off the view at either end, that and the line of the road, which curves away from the lake at the north end, and runs in an almost straight direction for some distance at the other."
"I see." And again for a moment Ferrars consulted the sketch. Then—
"Did you measure the distance between the target and the spot where the body was found?"
"No. It was the usual distance for practice, I should think."
"It was rather a long range," interposed Brierly. "I am something of a shot myself and I noticed that."
Again the detective pondered over the sketch.
"By this time I dare say," he said presently, "there will be any number of curious people in the wood and about that spot."