'I should—under the bed, and scream,' said the lively young lady he had taken down. And so for some minutes that end of the table applied itself zealously to solving the difficult problem of the proper course to take on being called early by a raving maniac.

Meanwhile Mabel had succeeded in dropping poor Mr. Pidgely and resuming conversation with Mark; this time on ordinary topics—pictures, books, theatres, and people (especially people); he talked well, and the sympathy between them increased.

Then as the dessert was being taken round, Dolly and Colin came in. 'I've had ices, Mabel,' said the latter confidentially in her ear as he passed her chair on his way to his mother; but Dolly stole quietly in and sat down by her father's side without a word.

'Do you notice any difference in my sister Dolly?' Mabel asked Mark, with a little anxious line on her forehead.

'She is not looking at all well,' said Mark, following the direction of her glance. There certainly was a change in Dolly; she had lost all her usual animation, and sat there silent and constrained, leaving the delicacies with which her father had loaded her plate untouched, and starting nervously whenever he spoke to her. When good-natured Mr. Pidgely displayed his one accomplishment of fashioning a galloping pig out of orange-peel for her amusement, she seemed almost touched by his offering, instead of slightly offended, as the natural Dolly would have been.

'I don't think she is ill,' said Mabel, 'though I was uneasy about that at first. Fräulein and I fancy she must be worrying herself about something, but we can't get her to say what it is, and I don't like to tease her; very likely she is afraid of being laughed at if she tells anybody. But I do so wish I could find out; children can make themselves so terribly wretched over mere trifles sometimes.'

But the hour of 'bereavement,' as Mr. Du Maurier calls it, had come; gloves were being drawn on, the signal was given. Mr. Pidgely, after first carefully barricading the path on his side of the table with his chair, opened the door, and the men, left to themselves, dropped their hypocritical mask of resigned regret as the handle turned on Mrs. Langton's train, and settled down with something very like relief.

Mark, of course, could not share this, though it is to be feared that even he found some consolation in his cigarette; the sound of Mabel's voice had not ceased to ring in his ears when her father took him by the arm and led him up to be introduced to the professor, who was standing before a picture. The man of science seemed at first a little astonished at having an ordinary young man presented to him in this way, but when his host explained that Mark was the author of the book of which the professor had been speaking so highly, his manner changed, and he overwhelmed him with his courtly compliments, while the other guests gathered gradually nearer, envying the fortunate object of so marked a distinction.

But the object himself was horribly uncomfortable; for it appeared that the professor in reading 'Illusion' had been greatly struck by a brilliant simile drawn from some recent scientific discoveries with which he had had some connection, and had even discovered in some passages what he pronounced to be the germ of a striking theory that had already suggested itself to his own brain, and he was consequently very anxious to find out exactly what was in Mark's mind when he wrote. Before Mark knew where he was, he found himself let in for a scientific discussion with one of the leading authorities on the subject, while nearly everyone was listening with interest for his explanation. His forehead grew damp and cold with the horror of the situation—he almost lost his head, for he knew very little about science. Thanks, however, to his recent industry, he kept some recollection of the passages in question, and without any clear idea of what he was going to say, plunged desperately into a long and complicated explanation. He talked the wildest nonsense, but with such confidence that everyone in the room but the professor was impressed. Mark had the mortification of seeing, as the great man heard him out with a quiet dry smile, and a look in his grey eyes which he did not at all like, that he was found out. But the professor only said at the end, 'Well, that's very interesting, Mr. Ashburn, very interesting indeed—you have given me a really considerable insight into your—ah—mental process.' And for the rest of the evening he talked to his host. As he drove home with his wife that night, however, his disappointment found vent: 'Never been so taken in in my life,' he remarked; 'I did think from his book that that young Ernstone and I would have something in common; but I tried him but got nothing out of him but rubbish; probably got the whole thing up out of some British Association speech and forgotten it! I hate your shallow fellows, and 'pon my word I felt strongly inclined to show him up, only I didn't care to annoy Langton!'

'I'm glad you didn't, dear,' said his wife; 'I don't think dinner-parties are good places to show people up in, and really Mr. Ernstone, or Ashburn, whatever his name is, struck me as being so very charming—perhaps you expected too much from him.'