"Yussuf," said Haroun, addressing Giafer by that name in order to further their disguise and continue what gave promise of proving a very entertaining misunderstanding, "I am sure you will salute with due respect the person of this Grand Vizier, who is, I doubt not, as good a man or even a better than Giafer himself." "Friend Hamad," replied Giafer, speaking to Haroun in the style and by the name they had previously agreed upon, "I salute with pleasure both our new acquaintances, and am ready to believe that Abraha is no less worthy to be really Grand Vizier than Sidi ibn Thalabi is to be really Caliph." Haroun perceived both from the manner and the answer of Giafer that the sham Grand Vizier was a joke not quite to his liking. This amused Haroun not a little, and he employed the time as they walked towards the river in further light and playful discourse upon the topic. Addressing Abraha, he said, "You must be pleased, sir, to excuse any roughness or want of good manners and politeness on the part of my friend Yussuf; he is perhaps a little bit jealous of the good fortune of one who has been regarded as the Grand Vizier." Abraha, who was a rather dull and stolid personage, accepted these mock apologies with such imperturbable gravity and sincerity that Haroun was delighted with him. Saluting Haroun very solemnly, the sham Grand Vizier said, "Sir, I beg that you will give yourself no concern respecting the language or demeanour of your friend Yussuf. I dare say he is a good plain man, however unused to the company of high personages, and in any case I am able to make allowances for any whiff of passing ill-humour or jealousy." During this conversation between Haroun and Abraha, Giafer and Sidi ibn Thalabi had fallen a little way behind and were walking and talking together. A little way behind these came the two slaves whom Mesrur had brought to the slave merchants with him to carry the gold pieces. When the party arrived at the bank of the Tigris, Haroun, stepping aside, beckoned the slaves to him and despatched them to the palace with a note addressed to the Grand Chamberlain. In this note he informed that functionary that he should not return to the palace for some hours, and commanded him to send the two slaves at once, under guard and without allowing them to speak to any one, to a town fifty days' journey from Bagdad, he having no mind to entrust the secret of his last night's adventure to the indiscreet tongues of the slaves who had participated in it. Having thus got rid of the slaves, Haroun and Giafer accompanied their new acquaintances, Abraha and Sidi ibn Thalabi, on board the ship or pleasure barge belonging to the latter. After they had been seated for some time, and had appeased their hunger by partaking of a very substantial breakfast, Haroun said to Sidi ibn Thalabi-- "I must now remind you of your promise to tell me something of your recent experience." Upon which Sidi ibn Thalabi spoke as follows: