Her brows drew together, a look of fear passed over her face.

‘Too soon,’ she murmured. ‘Too soon. A mistake . . . Ah! yes, I remember! The Sixth Sign!’

She half sprang to her feet, then dropped back, passing her hand over her face and murmuring:

‘But what am I saying? I am raving. These things never happened.’

‘Now don’t distress yourself.’

But she was looking at him in anguished perplexity.

‘M. le docteur, I do not understand. Why should I have these dreams—these fancies? I was only sixteen when I entered the religious life. I have never travelled. Yet I dream of cities, of strange people, of strange customs. Why?’ She pressed both hands to her head.

‘Have you ever been hypnotized, my sister? Or been in a state of trance?’

‘I have never been hypnotized, M. le docteur. For the other, when at prayer in the chapel, my spirit has often been caught up from my body, and I have been as one dead for many hours. It was undoubtedly a blessed state, the Reverend Mother said—a state of grace. Ah! yes,’ she caught her breath. ‘I remember, we too called it a state of grace.’

‘I would like to try an experiment, my sister.’ Rose spoke in a matter-of-fact voice. ‘It may dispel those painful half-recollections. I will ask you to gaze once more in the crystal. I will then say a certain word to you. You will answer with another. We will continue in this way until you become tired. Concentrate your thoughts on the crystal, not upon the words.’

As I once more unwrapped the crystal and gave it into Sister Marie Angelique’s hands, I noticed the reverent way her hands touched it. Reposing on the black velvet, it lay between her slim palms. Her wonderful deep eyes gazed into it. There was a short silence, and then the doctor said: ‘Hound.’

Immediately Sister Marie Angelique answered ‘Death.’

I do not propose to give a full account of the experiment. Many unimportant and meaningless words were purposely introduced by the doctor. Other words he repeated several times, sometimes getting the same answer to them, sometimes a different one.

That evening in the doctor’s little cottage on the cliffs we discussed the result of the experiment.

He cleared his throat, and drew his note-book closer to him.

‘These results are very interesting—very curious. In answer to the words “Sixth Sign”, we get variously Destruction, Purple, Hound, Power, then again Destruction, and finally Power. Later, as you may have noticed, I reversed the method, with the following results. In answer to Destruction, I get Hound; to Purple, Power; to Hound, Death, again, and to Power, Hound. That all holds together, but on a second repetition of Destruction, I get Sea, which appears utterly irrelevant. To the words “Fifth Sign”, I get Blue, Thoughts, Bird, Blue again, and finally the rather suggestive phrase Opening of mind to mind. From the fact that “Fourth Sign” elicits the word Yellow, and later Light, and that “First Sign” is answered by Blood, I deduce that each Sign had a particular colour, and possibly a particular symbol, that of the Fifth Sign being a bird, and that of the Sixth a hound. However, I surmise that the Fifth Sign represented what is familiarly known as telepathy—the opening of mind to mind. The Sixth Sign undoubtedly stands for the Power of Destruction.’