She simply overwhelmed him, and I repeat that I do not wonder at it, for my own pulse was not exactly steady.  She asked us to dine with her.

I pleaded an engagement at the club and signed to Harry to do likewise; but he was completely gone and paid no attention to me.

He accepted the invitation gratefully, with frank delight, and I left them together.

It was about ten o’clock when he came home that evening.  I was seated in the library and, hearing him enter the hall, called to him.

What a face was his!  His lips trembled with nervous feeling, his eyes glowed like the eyes of a madman.  I half started from my chair in amazement.

“I have no time,” said he in answer to my invitation to join me with a bottle.  “I have a letter or two to write, and—­and I must get some sleep.”

“Did you just leave Le Mire?”

“Yes.”

I looked at my watch.

“What under the sun did you find to talk about?”

“Oh, anything—­nothing.  I say, she’s charming.”

His essay at indifference was amusing.

“You find her so?”

“Rather.”

“She seems to have taken a fancy to you.”

Harry actually grew red.

“Hardly,” he said; but there was hope in the word.

“She is hardly your kind, Harry.  You know that.  You aren’t going in for this sort of thing?”

“This sort—­I don’t know what you mean.”

“Yes, you do, Hal.  You know exactly what I mean.  To put the thing plainly, Le Mire is a dangerous woman—­none more so in all the world; and, Harry boy, be sure you keep your head and watch your step.”

He stood for a moment looking at me in silence with a half-angry frown, then opened his mouth as though to speak, and finally turned, without a word, and started for the door.  There he turned again uncertainly, hesitating.

“I am to ride with Desiree in the morning,” said he, and the next moment was gone.

“Desiree!”

He called her Desiree!

I think I smiled for an hour over that; and, though my reflections were not free from apprehension, I really felt but little anxiety.  Not that I underrated Le Mire’s fascination and power; to confess the truth, my ease of mind was the result of my own vanity.  Le Mire had flattered me into the belief that she was my friend.

A week passed—­a dull week, during which I saw little of Harry and Le Mire not at all.  At the time, I remember, I was interested in some chemical experiments—­I am a dabbler with the tubes—­and went out but little.  Then—­this was on Friday—­Harry sought me out in the laboratory to tell me he was going away.  In answer to my question, “Where?” he said, “I don’t know.”

“How long will you be gone?”

“Oh, a week—­perhaps a month.”

I looked at him keenly, but said nothing.  It would have done no good to force him into an equivocation by questions.  Early the next morning he departed, with three trunks, and with no further word to me save a farewell.  No sooner was he gone than I started for the telephone to call up Le Mire; but thought better of it and with a shrug of the shoulders returned to the laboratory.