and a decided opinion of his own about most passing matters of public interest.

Already, even in those days, the young medical student was very deeply engaged in recondite speculations on the question of energy. His active mind, always dwelling upon wide points of cosmical significance, had hit upon the germ of that great revolutionary idea which was afterwards to change the whole course of modern physics. But, as often happens with young men of twenty-five, there was another subject which divided his attention with the grand theory of his life: and that subject was the pretty daughter of his friend and instructor, Dr. Abury, the eminent authority on the treatment of the insane. In all London you couldn't have found a sweeter or prettier girl than Hetty Abury. Young Greatrex thought her clever, too; and, though that is perhaps saying rather too much, she was certainly a good deal above the average of ordinary London girls in intellect and accomplishments.

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They say, Arthur," she said to him on the day after their formal engagement, "that the course of true love never did run smooth; and yet it seems somehow as if ours was wonderfully smoothed over for us by everybody and everything. I am the happiest and proudest girl in all the world to have won the love of such a man as you for my future husband.”

Arthur Greatrex stroked the back of her white little hand with his, and answered gently, "I hope nothing will ever arise to make the course of our love run any the rougher; for certainly we do seem to have every happiness laid out most temptingly before us. It almost feels to me as if my paradise had been too easily won, and I ought to have something harder to do before I enter it."

"Don't say that, Arthur," Hetty put in hastily. "It sounds too much like an evil omen."

"You superstitious little woman!" the young doctor

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replied with a smile. 'Talking to a scientific man about signs and portents!" And he kissed her wee hand tenderly, and went home to his bachelor lodging with that strange exhilaration in heart and step which only the ecstasy of first love can ever bring one.

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"No," he thought to himself, as he sat down in his own easy-chair, and lighted his cigar; "I don't believe any cloud can ever arise between me and Hetty. We have everything in our favour-means to live upon, love for one another, a mutual respect, kind relations, and hearts that were meant by nature each for the other. Hetty is certainly the very sweetest little girl that ever lived; and she's as good as she's sweet, and as loving as she's beautiful. What a dreadful thing it is for a man in love to have to read up medicine for his next examination!" And he took a medical book down from the shelf with a sigh, and pretended to be deeply interested in the diagnosis of scarlet fever till his cigar was finished. But, if the truth must be told, the words really swam before him, and all the letters on the page apparently conspired together to make up but a single name a thousand times over-Hetty, Hetty, Hetty, Hetty. At last he laid the volume down as hopeless, and turned dreamily into his bedroom, only to lie awake half the night and think perpetually on that one theme of Hetty.

Next day was Dr. Abury's weekly lecture on diseases of the brain and nervous system; and Arthur Greatrex, convinced that he really must make an effort, went to hear it. The subject was one that always interested him; and partly by dint of mental attention, partly out of sheer desire to master the matter, he managed to hear it through, and even take in the greater part of its import. As he left the room to go down the hospital stairs, he had his mind fairly distracted between the premonitory symptoms of insanity and Hetty Abury. "Was there ever such an unfortunate profession as medicine for a man in love?" he

asked himself, half angrily. "Why didn't I go and be a parson or a barrister, or anything else that would have kept me from mixing up such incongruous associations? And yet, when one comes to think of it, too, there's no particular natural connection after all between Chitty on Contract' and dearest Hetty."

Musing thus, he turned to walk down the great central staircase of the hospital. As he did so, his attention was attracted for a moment by a singular person who was descending the opposite stair towards the same landing. This person was tall and not ill-looking; but, as he came down the steps, he kept pursing up his mouth and cheeks into the most extraordinary and hideous grimaces; in fact, he was obviously making insulting faces at Arthur Greatrex. Arthur was so much preoccupied at the moment, however, that he hardly had time to notice the eccentric stranger; and, as he took him for one of the harmless lunatic patients in the mental-diseases ward, he would have passed on without further observing the man but for an odd circumstance which occurred as they both reached the great central landing together. Arthur happened to drop the book he was carrying from under his arm, and instinctively stooped to pick it up. At the same moment the grimacing stranger dropped his own book also, not in imitation, but by obvious coincidence, and stooped to pick it up with the self-same gesture. Struck by the oddity of the situation, Arthur turned to look at the curious patient. To his utter horror and surprise, he discovered that the man he had been observing was his own reflection.

In one second the real state of the case flashed like

lightning across his bewildered brain. There was no opposite staircase, as he knew very well, for he had been down those steps a hundred times before: nothing but a big mirror, which reflected and doubled the one-sided flight from top to bottom. It was only his momentary

preoccupation which had made him for a minute fall into the obvious delusion. The man whom he saw descending towards him was really himself, Arthur Greatrex.

Even so, he did not at once grasp the full strangeness of the scene he had just witnessed. It was only as he turned to descend again that he caught another glimpse of himself in the big mirror, and saw that he was still making the most horrible and ghastliest grimacesgrimaces such as he had never seen equalled save by the monkeys at the Zoo, and (horridest thought of all!) by the worst patients in the mental-disease ward. He pulled himself up in speechless horror, and looked once more into the big mirror. Yes, there was positively no mistaking the fact: it was he, Arthur Greatrex, fellow of Catherine's, who was making these hideous and meaningless distortions of his own countenance.

With a terrible effort of will he pulled his face quite straight again, and assumed his usual grave and quiet demeanour. For a full minute he stood looking at himself in the glass; and then, fearful that some one else would come and surprise him, he hurried down the remaining steps, and rushed out into the streets of London. Which way he turned he did not know or care; all he knew was that he was repressing by sheer force of muscular strain a deadly impulse to pucker up his mouth and draw down the corners of his lips into one-sided grimaces. As he passed down the streets, he watched his own image faintly reflected in the panes of the windows, and saw that he was maintaining outward decorum, but only with a conscious and evident struggle. At one doorstep a little child was playing with a kitten; Arthur Greatrex, who was a naturally kindly man, looked down at her and smiled, in spite of his preoccupation: instead of smiling back, the child uttered a scream of terror, and rushed back into the house to hide her face in her mother's apron. He felt instinctively that, in place of smiling, he had looked at

the child with one of his awful faces. It was horrible, unendurable, and he walked on through the streets and across the bridges, pulling himself together all the time, till at last, half-unconsciously, he found himself near Pimlico, where the Aburys were then living.

Looking around him, he saw that he had come nearly to the corner where Hetty's little drawing-room faced the road. The accustomed place seemed to draw him off for a moment from thinking of himself, and he remembered that he had promised Hetty to come in for luncheon. But dare he go in such a state of mind and body as he then found himself in? Well, Hetty would be expecting him; Hetty would be disappointed if he didn't come; he certainly mustn't break his engagement with dear little Hetty. After all, he began to say to himself, what was it but a mere twitching of his face, probably a slight nervous affection? Young doctors are always nervous about themselves, they say; they find all their own symptoms accurately described in all the text-books. His face wasn't twitching now, of that he was certain; the nearer he got to Hetty's, the calmer he grew, and the more he was conscious he could relax his attention without finding his muscles were playing tricks upon him. He would turn in and have luncheon, and soon forget all about it.

Hetty saw him coming, and ran lightly to open the door for him, and as he took his seat beside her at the table, he forgot straightway his whole trouble, and found himself at once in Paradise once more. All through lunch they talked about other things-happy plans for the future, and the small prettinesses that lovers find so perennially delightful; and long before Arthur went away the twitching in his face had altogether ceased to trouble him. Once or twice, indeed, in the course of the afternoon he happened to glance casually at the lookingglass above the drawing-room fireplace (those were the