We need not dwell longer upon this period. One incident of it, however, cannot be passed in silence: that was the abandonment of his life-long project of writing the History of the Conquest of Mexico to Mr. William H. Prescott. It had been a scheme of his boyhood; he had made collections of materials for it during his first residence in Spain; and he was actually and absorbedly engaged in the composition of the first chapters, when he was sounded by Mr. Cogswell, of the Astor Library, in behalf of Mr. Prescott. Some conversation showed that Mr. Prescott was contemplating the subject upon which Mr. Irving was engaged, and the latter instantly authorized Mr. Cogswell to say that he abandoned it. Although our author was somewhat far advanced, and Mr. Prescott had not yet collected his materials, Irving renounced the glorious theme in such a manner that Prescott never suspected the pain and loss it cost him, nor the full extent of his own obligation. Some years afterwards Irving wrote to his nephew that in giving it up he in a manner gave up his bread, as he had no other subject to supply its place: "I was," he wrote, "dismounted from my _cheval de bataille_, and have never been completely mounted since." But he added that he was not sorry for the warm impulse that induced him to abandon the subject, and that Mr. Prescott's treatment of it had justified his opinion of him. Notwithstanding Prescott's very brilliant work, we cannot but feel some regret that Irving did not write a Conquest of Mexico. His method, as he outlined it, would have been the natural one. Instead of partially satisfying the reader's curiosity in a preliminary essay, in which the Aztec civilization was exposed, Irving would have begun with the entry of the conquerors, and carried his reader step by step onward, letting him share all the excitement and surprise of discovery which the invaders experienced, and learn of the wonders of the country in the manner most likely to impress both the imagination and the memory; and with his artistic sense of the value of the picturesque he would have brought into strong relief the _dramatis personæ_ of the story.