‘So either you’re mad, and therefore unfit to marry; or else you’ve done something which places you outside the tolerably generous boundaries of civilised society, and are therefore still more unfit to marry. You’re on the horns of a dilemma.’

‘I—I’m the victim of a delusion.’

‘What is the nature of the delusion? Does it take the shape of a—beetle?’

‘Atherton!’

Without the slightest warning, he collapsed,—was transformed; I can describe the change which took place in him in no other way. He sank in a heap on the floor; he held up his hands above his head; and he gibbered,—like some frenzied animal. A more uncomfortable spectacle than he presented it would be difficult to find. I have seen it matched in the padded rooms of lunatic asylums, but nowhere else. The sight of him set every nerve of my body on edge.

‘In Heaven’s name, what is the matter with you, man? Are you stark, staring mad? Here,—drink this!’

Filling a tumbler with brandy, I forced it between his quivering fingers. Then it was some moments before I could get him to understand what it was I wanted him to do. When he did get the glass to his lips, he swallowed its contents as if they were so much water. By degrees his senses returned to him. He stood up. He looked about him, with a smile which was positively ghastly.

‘It’s—it’s a delusion.’

‘It’s a very queer kind of a delusion, if it is.’

I eyed him, curiously. He was evidently making the most strenuous efforts to regain his self-control,—all the while with that horrible smile about his lips.