"What is the alley like?"

"There are two lines of old yew hedge, twelve feet high and impenetrable. The walk in the centre is about eight feet across."

"Is there anything between the hedges and the walk?"

"Yes, there is a strip of gra.s.s about six feet broad on either side."

"I understand that the yew hedge is penetrated at one point by a gate?"

"Yes, the wicket-gate which leads on to the moor."

"Is there any other opening?"

"None."

"So that to reach the yew alley one either has to come down it from the house or else to enter it by the moor-gate?"

"There is an exit through a summer-house at the far end."

"Had Sir Charles reached this?"

"No; he lay about fifty yards from it."

"Now, tell me, Dr. Mortimer--and this is important--the marks which you saw were on the path and not on the gra.s.s?"

"No marks could show on the gra.s.s."

"Were they on the same side of the path as the moor-gate?"

"Yes; they were on the edge of the path on the same side as the moor-gate."

"You interest me exceedingly. Another point. Was the wicket-gate closed?"

"Closed and padlocked."

"How high was it?"

"About four feet high."

"Then anyone could have got over it?"

"Yes."

"And what marks did you see by the wicket-gate?"

"None in particular."

"Good heaven! Did no one examine?"

"Yes, I examined, myself."

"And found nothing?"

"It was all very confused. Sir Charles had evidently stood there for five or ten minutes."

"How do you know that?"

"Because the ash had twice dropped from his cigar."

"Excellent! This is a colleague, Watson, after our own heart. But the marks?"

"He had left his own marks all over that small patch of gravel. I could discern no others."

Sherlock Holmes struck his hand against his knee with an impatient gesture.

"If I had only been there!" he cried. "It is evidently a case of extraordinary interest, and one which presented immense opportunities to the scientific expert. That gravel page upon which I might have read so much has been long ere this smudged by the rain and defaced by the clogs of curious peasants. Oh, Dr. Mortimer, Dr. Mortimer, to think that you should not have called me in! You have indeed much to answer for."

"I could not call you in, Mr. Holmes, without disclosing these facts to the world, and I have already given my reasons for not wishing to do so.

Besides, besides--"

"Why do you hesitate?"

"There is a realm in which the most acute and most experienced of detectives is helpless."

"You mean that the thing is supernatural?"

"I did not positively say so."

"No, but you evidently think it."

"Since the tragedy, Mr. Holmes, there have come to my ears several incidents which are hard to reconcile with the settled order of Nature."

"For example?"

"I find that before the terrible event occurred several people had seen a creature upon the moor which corresponds with this Baskerville demon, and which could not possibly be any animal known to science. They all agreed that it was a huge creature, luminous, ghastly, and spectral. I have cross-examined these men, one of them a hard-headed countryman, one a farrier, and one a moorland farmer, who all tell the same story of this dreadful apparition, exactly corresponding to the h.e.l.l-hound of the legend. I a.s.sure you that there is a reign of terror in the district, and that it is a hardy man who will cross the moor at night."

"And you, a trained man of science, believe it to be supernatural?"

"I do not know what to believe."

Holmes shrugged his shoulders. "I have hitherto confined my investigations to this world," said he. "In a modest way I have combated evil, but to take on the Father of Evil himself would, perhaps, be too ambitious a task. Yet you must admit that the footmark is material."

"The original hound was material enough to tug a man's throat out, and yet he was diabolical as well."

"I see that you have quite gone over to the supernaturalists. But now, Dr. Mortimer, tell me this. If you hold these views, why have you come to consult me at all? You tell me in the same breath that it is useless to investigate Sir Charles's death, and that you desire me to do it."

"I did not say that I desired you to do it."

"Then, how can I a.s.sist you?"