I went at once to the house of Mr. Smith. He was expecting me, having been warned by telegram. He received me very frankly, without any formality, his pipe in his mouth, a glass of brandy on the table. A second glass was brought in by a servant, and I had to drink to my host before beginning our interview.

"Mr. Ward sent you," said he to me in a jovial tone. "Good; let us drink to Mr. Ward's health."

I clinked glasses with him, and drank in honor of the chief of police.

"And now," demanded Elias Smith, "what is worrying him?"

At this I made known to the mayor of Morganton the cause and the purpose of my mission in North Carolina. I assured him that my chief had given me full power, and would render me every assistance, financial and otherwise, to solve the riddle and relieve the neighborhood of its anxiety relative to the Great Eyrie.

Elias Smith listened to me without uttering a word, but not without several times refilling his glass and mine. While he puffed steadily at his pipe, the close attention which he gave me was beyond question. I saw his cheeks flush at times, and his eyes gleam under their bushy brows. Evidently the chief magistrate of Morganton was uneasy about Great Eyrie, and would be as eager as I to discover the cause of these phenomena.

When I had finished my communication, Elias Smith gazed at me for some moments in silence. Then he said, softly, "So at Washington they wish to know what the Great Eyrie hides within its circuit?"

"Yes, Mr. Smith."

"And you, also?"

"I do."

"So do I, Mr. Strock."

He and I were as one in our curiosity.

"You will understand," added he, knocking the cinders from his pipe, "that as a land-owner, I am much interested in these stories of the Great Eyrie, and as mayor, I wish to protect my constituents."

"A double reason," I commented, "to stimulate you to discover the cause of these extraordinary occurrences! Without doubt, my dear Mr. Smith, they have appeared to you as inexplicable and as threatening as to your people."

"Inexplicable, certainly, Mr. Strock. For on my part, I do not believe it possible that the Great Eyrie can be a volcano; the Alleghanies are nowhere of volcanic origins. I, myself, in our immediate district, have never found any geological traces of scoria, or lava, or any eruptive rock whatever. I do not think, therefore, that Morganton can possibly be threatened from such a source."

"You really think not, Mr. Smith?"

"Certainly."

"But these tremblings of the earth that have been felt in the neighborhood!"

"Yes these tremblings! These tremblings!" repeated Mr. Smith, shaking his head;" but in the first place, is it certain that there have been tremblings? At the moment when the flames showed most sharply, I was on my farm of Wildon, less than a mile from the Great Eyrie. There was certainly a tumult in the air, but I felt no quivering of the earth."

"But in the reports sent to Mr. Ward --"

"Reports made under the impulse of the panic, "interrupted the mayor of Morganton." I said nothing of any earth tremors in mine."

"But as to the flames which rose clearly above the crest?"

"Yes, as to those, Mr. Strock, that is different. I saw them; saw them with my own eyes, and the clouds certainly reflected them for miles around. Moreover noises certainly came from the crater of the Great Eyrie, hissings, as if a great boiler were letting off steam."

"You have reliable testimony of this?"

"Yes, the evidence of my own ears."

"And in the midst of this noise, Mr. Smith, did you believe that you heard that most remarkable of all the phenomena, a sound like the flapping of great wings?"

"I thought so, Mr. Strock; but what mighty bird could this be, which sped away after the flames had died down, and what wings could ever make such tremendous sounds. I therefore seriously question, if this must not have been a deception of my imagination. The Great Eyrie a refuge for unknown monsters of the sky! Would they not have been seen long since, soaring above their immense nest of stone? In short, there is in all this a mystery which has not yet been solved."

"But we will solve it, Mr.