While in the college he continued his investigations in science, applying his knowledge of terrestrial chemistry to the chemistry of the heavens, as shown in nearly all his writings. Besides the position held in the college, he gave lessons in schools and seminaries in geology, astronomy, chemistry, Latin and Greek. In 1873 he visited Lexington, where he met his old friend, Dr. J. C. Darby, and delivered lectures in public, at the Sayre Institute and the Baptist School, returning to Cincinnati the following spring. Except from his writings, he seemed to have no source of revenue for several years. How he managed to exist his most intimate friends could only conjecture. True, he contributed papers to monthly publications, but they appeared at such long intervals they could not be relied on for support, so, in the autumn of 1878 his friends organized for him a course of lectures, which were well patronized by physicians and others versed in science. In the meantime, negotiations were opened with prominent citizens of suburban towns for other lectures, and efforts were made to retire the Professor on an annuity. HIS END DRAWING NEAR. Enfeebled health, which confined him to his room for several weeks, prevented him from entering on the suburban course, so a second course was projected for the city and one of the lectures delivered. From what transpired after that lecture his friends were again anxious regarding his health, and, as the time approached for the delivery of the second, determined to see him. For reasons stated elsewhere it was with some difficulty he was found. Prostrated on a couch, he was suffering from a hemorrhage of the lungs of a few days previous, with evidences all around of a state of extreme destitution. No time was lost in having him removed to comfortable quarters in the Good Samaritan Hospital, where his friends arranged for his care as a private patient. Next day, April 3, he expressed himself as greatly benefited by the change and talked cheerfully and hopefully of the future. Next day, Friday, he continued to improve, but on Saturday proof of his forthcoming article in the Popular Science Monthly reached him, and, feeling that he ought to return it promptly, he sat up to do the work. The effort was too great. Overcome with exhaustion after its completion, he sank to sleep and a little after two o'clock next morning, April 6, his weary spirit peacefully took its flight. Born in 1818, the Professor was then in the sixty-first year of his age. HIS OBSEQUIES. A committee of the more intimate friends of the deceased was formed, consisting of the late Jacob Traber, his nephew, J. C. Sproull, Drs. J. J. and William Taft and the writer. Funeral services were held in the chapel of the Hospital, where, considering the suddenness of the Professor's demise, many mourners were present. The interest evinced was profound, while the floral tributes that covered the casket were eloquent of affection and esteem.