"'Very well,' said Hussein. 'I leave Naples to-night.'
"'Your highness is as free as air to go and to come. Nevertheless, I must make one condition. Before your departure, you will swear by the Prophet, that no harm shall be done to Osmin or Zaida.'
"'Osmin and Zaida belong to me, and I shall do what I please with them.'
"'Then your highness will be pleased to deliver them over to me, to be punished according to the laws of the country; and, until you do so, you will not be allowed to leave Naples.'
"'Who will prevent me?'
"'I will.'
"The pacha laid his hand on his dagger. The minister stepped to the window and made a sign. The next moment the tramp of heavy boots and jingle of spurs were heard upon the stairs; the door opened, and a gigantic corporal of gendarmes made his appearance, his right hand raised to his cocked hat, his left upon the seam of his trouser.
"'Gennaro,' said the minister of police, 'if I gave you an order to arrest this gentleman, would you see any difficulty in executing it?'
"'None, your excellency.'
"'You are aware that this gentleman's name is Hussein Pacha.'