Dr. Mortimer refolded his paper and replaced it in his pocket. “Those are the public facts, Mr. Holmes, in connection with the death of Sir Charles Baskerville.”

“I must thank you,” said Sherlock Holmes, “for calling my attention to a case which certainly presents some features of interest. I had observed some newspaper comment at the time, but I was exceedingly preoccupied by that little affair of the Vatican cameos, and in my anxiety to oblige the Pope I lost touch with several interesting English cases. This article, you say, contains all the public facts?”

“It does.”

“Then let me have the private ones.” He leaned back, put his finger-tips together, and assumed his most impassive and judicial expression.

“In doing so,” said Dr. Mortimer, who had begun to show signs of some strong emotion, “I am telling that which I have not confided to anyone. My motive for withholding it from the coroner’s inquiry is that a man of science shrinks from placing himself in the public position of seeming to indorse a popular superstition. I had the further motive that Baskerville Hall, as the paper says, would certainly remain untenanted if anything were done to increase its already rather grim reputation. For both these reasons I thought that I was justified in telling rather less than I knew, since no practical good could result from it, but with you there is no reason why I should not be perfectly frank.

“The moor is very sparsely inhabited, and those who live near each other are thrown very much together. For this reason I saw a good deal of Sir Charles Baskerville. With the exception of Mr. Frankland, of Lafter Hall, and Mr. Stapleton, the naturalist, there are no other men of education within many miles. Sir Charles was a retiring man, but the chance of his illness brought us together, and a community of interests in science kept us so. He had brought back much scientific information from South Africa, and many a charming evening we have spent together discussing the comparative anatomy of the Bushman and the Hottentot.