proved very detrimental to his health, bringing him home in the autumn with a hue denoting serious derangement of the liver. Yet he not only persevered in his explorations, but occupied himself in winter with laboratory work, usually until midnight. He did not desist even when suffering acutely from his last illness, but dictated the closing portions of his report until within forty-eight hours of his death. Between Dr. Owen and Governor Conway, who had given him the Arkansas appointment, there always existed the most cordial good feeling, and the latter provided every facility for the prosecution of the survey. Toward the end of 1860 postal communication between the North and South was considerably interrupted, for the breach which culminated in civil war was already opening. Yet the Governor, at considerable pains, succeeded in sending safely to New Harmony several thousand dollars due from the appropriation, and required for the publication of the second volume of the report. Dr. Owen had died, and the issuing of this volume, for which he had left full instructions, fell to his brother and administrator. Prof. Richard Owen. The latter also executed a second survey of Indiana, for which his brother had been appointed in 1859, with the understanding that Richard should do as much of the work as might be necessary.
The labors above outlined resulted in undermining the originally good constitution with which David Dale Owen had been endowed. Malarial fever, complicated with rheumatic attacks which threatened the heart, terminated his career of usefulness November 13, 1860. He left a widow, two sons, and two daughters. Dr. Owen's character was marked by integrity and amiable simplicity; his kindness and liberality were well known, and his scientific work was always conscientiously performed. His fondness for chemistry led him to build at a cost of ten thousand dollars a laboratory fully equipped, which served as a material evidence of his good taste in architecture. His architectural taste was further evinced in the artistic design which he submitted for the Smithsonian Institution building. He also tested many varieties of building stone before the selection of material for that structure was determined.
His artistic skill enabled him, besides richly illustrating his reports, as above noted, to leave good portraits in oil of members of his family. He transmitted to London views of the fossil Sigillaria found erect in situ twelve miles from New Harmony, with a description, which were presented to the British Association for the Advancement of Science by Sir Roderick Murchison. He subsequently conducted Sir Charles Lyell to the locality while the latter was his guest at New Harmony in his second visit to the United States.
