"I beg pardon, sir," he said, greatly flustered; "the gentleman handed me this for you."

It was a note from a discerning friend, who had never yet sent him a case that was not vitally interesting from one point or another.

"Please see the bearer of this note," the brief message ran, "though I doubt if even you can do much to help him."

John Silence paused a moment, so as to gather from the mind of the writer all that lay behind the brief words of the letter. Then he looked up at his servant with a graver expression than he had yet worn.

"Go back and find this gentleman," he said, "and show him into the green study. Do not reply to his question, or speak more than actually necessary; but think kind, helpful, sympathetic thoughts as strongly as you can, Barker. You remember what I told you about the importance of thinking, when I engaged you. Put curiosity out of your mind, and think gently, sympathetically, affectionately, if you can."

He smiled, and Barker, who had recovered his composure in the doctor's presence, bowed silently and went out.

There were two different reception-rooms in Dr. Silence's house. One (intended for persons who imagined they needed spiritual assistance when really they were only candidates for the asylum) had padded walls, and was well supplied with various concealed contrivances by means of which sudden violence could be instantly met and overcome. It was, however, rarely used. The other, intended for the reception of genuine cases of spiritual distress and out-of-the-way afflictions of a psychic nature, was entirely draped and furnished in a soothing deep green, calculated to induce calmness and repose of mind. And this room was the one in which Dr. Silence interviewed the majority of his "queer" cases, and the one into which he had directed Barker to show his present caller.

To begin with, the arm-chair in which the patient was always directed to sit, was nailed to the floor, since its immovability tended to impart this same excellent characteristic to the occupant. Patients invariably grew excited when talking about themselves, and their excitement tended to confuse their thoughts and to exaggerate their language. The inflexibility of the chair helped to counteract this. After repeated endeavours to drag it forward, or push it back, they ended by resigning themselves to sitting quietly. And with the futility of fidgeting there followed a calmer state of mind.

Upon the floor, and at intervals in the wall immediately behind, were certain tiny green buttons, practically unnoticeable, which on being pressed permitted a soothing and persuasive narcotic to rise invisibly about the occupant of the chair. The effect upon the excitable patient was rapid, admirable, and harmless. The green study was further provided with a secret spy-hole; for John Silence liked when possible to observe his patient's face before it had assumed that mask the features of the human countenance invariably wear in the presence of another person. A man sitting alone wears a psychic expression; and this expression is the man himself. It disappears the moment another person joins him. And Dr. Silence often learned more from a few moments' secret observation of a face than from hours of conversation with its owner afterwards.

A very light, almost a dancing, step followed Barker's heavy tread towards the green room, and a moment afterwards the man came in and announced that the gentleman was waiting. He was still pale and his manner nervous.