The second volume of The Birds of America was finished in 1834, and in December of that year he published in Edinburgh the second volume of the Ornithological Biography. Soon after, while he was in London, a nobleman called upon him, with his family, and on examining some of his original drawings, and being told that it would still require eight years to complete the work, subscribed for it, saying, "I may not see it finished, but my children will." The words made a deep impression on Audubon. "The solemnity of his manner I could not forget for several days," he writes in the introduction to his third volume; "I often thought that neither might I see the work completed, but at length exclaimed, 'My sons may;' and now that another volume, both of my illustrations and of my biographies, is finished, my trust in Providence is augmented, and I cannot but hope that myself and my family together may be permitted to see the completion of my labors." When this was written, ten years had elapsed since the publication of his first plate. In the next three years, among other excursions he made one to the western coast of the Floridas and to Texas, in a vessel placed at his disposal by our government; and at the end of this time appeared the fourth and concluding volume of his engravings, and the fifth of his descriptions. The whole comprised four hundred and thirty-five plates, containing one thousand and sixty-five figures, from the Bird of Washington to the Humming Bird, of the size of life, and a great variety of land and marine views, and coral and other productions, of different climates and seasons, all carefully drawn and colored after nature. Well might the great naturalist felicitate himself upon the completion of his gigantic task. He had spent nearly half a century "amid the tall grass of the far-extended prairies of the west, in the solemn forests of the north, on the heights of the midland mountains, by the shores of the boundless ocean, and on the bosoms of our vast bays, lakes and rivers, searching for things hidden since the creation of this wondrous world from all but the Indian who has roamed in the gorgeous but melancholy wilderness." And speaking from the depth of his heart he says, "Once more surrounded by all the members of my dear family, enjoying the countenance of numerous friends who have never deserted me, and possessing a competent share of all that can render life agreeable, I look up with gratitude to the Supreme Being, and feel that I am happy."