There was a mosque at Constantinople, which had been built at the request of Saladin for the use of the followers of Islam. From this the worshippers were one day emerging when a band of half intoxicated Flemings and Venetians endeavoured to insult them by forcing an entry. The Mohammedans protected their building with all their energy, and their opponents promptly set it on fire. The fire spread to the neighbouring buildings, and the quarrel, at first a mere street-fight, grew fast and furious. {186} "No man could put out or abate that fire," says Geoffrey, "it waxed so great and horrible. And when the barons of the host, who were quartered on the other side of the fort, saw this, they were sore grieved and filled with pity--seeing the great churches and the rich palaces melting and falling in, and the great streets filled with merchandise burning in the flames; but they could do nothing." For two days and two nights the fire lasted, and so strong was the feeling of the city that all Latin settlers there fled with their goods and took refuge in the Crusaders' camp. Again and again the fire broke out, until from east to west its track could be marked out by one unbroken line of destruction and desolation. From the height where their camp was pitched, the Crusaders could but watch the terrible scene with dismay, knowing, as they did, that their men had been its cause. The return of Alexios did not mend matters. A silence as of death reigned in the blackened streets; looks of hatred met him wherever the people were to be accosted. Moreover, the fact that he had by no means fulfilled his promises of payment to the host led to deep distrust of him in that quarter. Envoys were sent to demand that the Emperor should keep his pledged word, and their speech to him ended with these significant words. "'Should you do so, it shall be well. If not, be it known to you that from this day forth, they will not hold you as lord or friend, but will endeavour to obtain their due by all the means in their power. And of this they now give you warning, seeing that they would not injure you, nor any one, without first defiance given; for never have they acted treacherously, nor in their land is it customary to do so.'" {187} There was but one answer to this defiance, seeing that the Emperor could not pay even if he would. He knew too well that he and his son had forfeited even the natural respect due to their position; Isaac, because he was a mere figure-head completely in the hands of Alexios, the real Emperor in all but name; and the latter because of the want of dignity he had shown even in his most friendly days, when on visiting the camp, he had permitted the rough Venetian sailors to snatch off his jewelled circlet and to force upon his head one of the dirty linen caps worn by themselves.