But there is no space to tell the rest of the story of his adventures among the Bakhtiyari, of his copying of inscriptions, of his return to Baghdad and his decision to give up the plans of life in Ceylon, and of his return from Baghdad again to Shuster and Persepolis and other ancient cities of Persia, and his exploration of the Karun River and his geographical paper on the subject, his opening of British trade, and his return to Constantinople. At Mosul he found that M. Botta was planning to explore the mounds across the Tigris that covered ancient Nineveh, and he warmly encouraged his plans. At Constantinople he visited Sir Stratford Canning and delivered to him despatches that had been confided to his care, in view of a threatened war between Persia and Turkey. Here he was kept in the service of the British Embassy, and intrusted with important and delicate negotiations and investigations which were so highly appreciated by Sir Stratford that he kept him as his attaché. Meanwhile M. Botta had begun his excavations of a palace of King Sargon at Khorsabad and was sending his reports and drawings to Paris. They were all sent by way of Constantinople, and, by M. Botta's generosity, were all seen by Mr. Layard. So deeply was he interested in them, and so intense was his desire to carry on excavations himself, that he secured his release from the Embassy, and also a grant of three hundred dollars from Sir Stratford's own purse, which, with what he could spare from his own money, would, he hoped, suffice to begin the work, when, if anything of value appeared, it was trusted that funds would be secured from English friends of Oriental learning. Thus, six years after leaving England, Mr. Layard, well equipped in knowledge of the people and in diplomatic experience, was ready to launch on his great career, which brought him fame and earned him the post in later years of British Ambassador at the Porte, which Sir Stratford had held, and--what is far greater--gave to the world the larger part of its knowledge of the lost empires of Assyria and Babylonia. With these few hundred dollars, and contributing every penny of his own income, in October of 1845, he left Constantinople without companion or servant, went by steamer to Samsoun, and then as fast as post-horses could climb or gallop over mountains and plains, he reached Mosul in twelve days.