“I was watching you through my little peep-hole—­as you saw,” he began, with a pleasant smile, advancing to shake hands.  “I find it of the greatest assistance sometimes—­”

But the patient interrupted him at once.  His voice was hurried and had odd, shrill changes in it, breaking from high to low in unexpected fashion.  One moment it thundered, the next it almost squeaked.

“I understand without explanation,” he broke in rapidly.  “You get the true note of a man in this way—­when he thinks himself unobserved.  I quite agree.  Only, in my case, I fear, you saw very little.  My case, as you of course grasp, Dr. Silence, is extremely peculiar, uncomfortably peculiar.  Indeed, unless Sir William had positively assured me—­”

“My friend has sent you to me,” the doctor interrupted gravely, with a gentle note of authority, “and that is quite sufficient.  Pray, be seated, Mr.—­”

“Mudge—­Racine Mudge,” returned the other.

“Take this comfortable one, Mr. Mudge,” leading him to the fixed chair, “and tell me your condition in your own way and at your own pace.  My whole day is at your service if you require it.”

Mr. Mudge moved towards the chair in question and then hesitated.

“You will promise me not to use the narcotic buttons,” he said, before sitting down.  “I do not need them.  Also I ought to mention that anything you think of vividly will reach my mind.  That is apparently part of my peculiar case.”  He sat down with a sigh and arranged his thin legs and body into a position of comfort.  Evidently he was very sensitive to the thoughts of others, for the picture of the green buttons had only entered the doctor’s mind for a second, yet the other had instantly snapped it up.  Dr. Silence noticed, too, that Mr. Mudge held on tightly with both hands to the arms of the chair.

“I’m rather glad the chair is nailed to the floor,” he remarked, as he settled himself more comfortably.  “It suits me admirably.  The fact is—­and this is my case in a nutshell—­which is all that a doctor of your marvellous development requires—­the fact is, Dr. Silence, I am a victim of Higher Space.  That’s what’s the matter with me—­Higher Space!”

The two looked at each other for a space in silence, the little patient holding tightly to the arms of the chair which “suited him admirably,” and looking up with staring eyes, his atmosphere positively trembling with the waves of some unknown activity; while the doctor smiled kindly and sympathetically, and put his whole person as far as possible into the mental condition of the other.

“Higher Space,” repeated Mr. Mudge, “that’s what it is.  Now, do you think you can help me with that?”

There was a pause during which the men’s eyes steadily searched down below the surface of their respective personalities.  Then Dr. Silence spoke.

“I am quite sure I can help,” he answered quietly; “sympathy must always help, and suffering always owns my sympathy.  I see you have suffered cruelly.  You must tell me all about your case, and when I hear the gradual steps by which you reached this strange condition, I have no doubt I can be of assistance to you.”