They would now have been in total darkness had it not been for a dim light which shone round the ghost and revealed the damp walls of a long, vaulted passage. Down this they proceeded with mute rapidity. Ere long a cool, refreshing breeze, which rushed wailing up the vault and caused the Emperor to wrap his loose nightdress closer round, announced their approach to the open air.

This they soon reached, and Nap found himself in one of the principal streets of Paris.

‘Worthy Spirit,’ said he, shivering in the chill night air, ‘permit me to return and put on some additional clothing. I will be with you again presently.’

‘Forward,’ replied his companion sternly.

He felt compelled, in spite of the rising indignation which almost choked him, to obey.

On they went through the deserted streets till they arrived at a lofty house built on the banks of the Seine. Here the Spectre stopped, the gates rolled back to receive them, and they entered a large marble hall which was partly concealed by a curtain drawn across, through the half transparent folds of which a bright light might be seen burning with dazzling lustre. A row of fine female figures, richly attired, stood before this screen. They wore on their heads garlands of the most beautiful flowers, but their faces were concealed by ghastly masks representing death’s-heads.

‘What is all this mummery?’ cried the Emperor, making an effort to shake off the mental shackles by which he was so unwillingly restrained, ‘Where am I, and why have I been brought here?’

‘Silence,’ said the guide, lolling out still further his black and bloody tongue. ‘Silence, if thou wouldst escape instant death.’

The Emperor would have replied, his natural courage overcoming the temporary awe to which he had at first been subjected, but just then a strain of wild, supernatural music swelled behind the huge curtain, which waved to and fro, and bellied slowly out as if agitated by some internal commotion or battle of waving winds. At the same moment an overpowering mixture of the scents of mortal corruption, blent with the richest Eastern odours, stole through the haunted hall.

A murmur of many voices was now heard at a distance, and something grasped his arm eagerly from behind.