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Rh unfit for practice, unless he was also a chemist. But Dr Cullen viewed the science as far more important, as capable of throwing light on the constitution of bodies, and of improving and amending those arts and manufactures that are most useful to man. He resolved to devote himself to its cultivation and improvement; and he would undoubtedly have derived celebrity from this science had not his fate led rather to the cultivation of medicine. But Dr Cullen, as the true comraencer of the study of scientific chemistry in Great Britain, claims a conspicuous place in this historical sketch. "

Dr Cullen's removal to Edinburgh was attended by a temporary pecuniary inconvenience, for no salary being attached to his chair in the university, his only means of supporting himself and family, were derived from the fees of students, and such practice as he could command; under these circumstances, he appears to have undertaken a translation of Van Swieten's commentaries on Boerhaave, in which he expected the assistance of his former pupils, Dr William Hunter and Dr Black. But we have already seen that his class became more numerously attended every session; besides which his practice also began to increase, so that his prospects having brightened, he relinquished this undertaking. In addition to lecturing on chemistry, he now began to deliver lectures on clinical medicine in the Royal Infirmary. This benevolent institution was opened in the December of 1741, and soon afterwards Dr John Rutherford, who was then professor of the practice of physic, proposed to explain, in clinical lectures, the nature and treatment of the cases admitted; a measure highly approved of by the enlightened policy of the managers, who, besides permitting students on paying a small gratuity to attend the hospital at large, appropriated two of its wards for the reception of the more remarkable cases which were destined, under the selection and management of one or more of the medical professors, to afford materials for this new and valuable mode of tuition. The privilege of delivering a course of clinical lectures was granted by the managers of the Royal Infirmary to Dr Rutherford in the year 1748, and in the following year extended to the other professors of medicine belonging to the university; none of whom, however, seem to have availed themselves of it, excepting Dr Rutherford, until the year 1757, when Dr Cullen undertook to deliver a course of such lectures, and was soon joined in the performance of that duty by Drs White and Rutherford. Dr Cullen soon obtained great reputation as a teacher of clinical medicine. "His lectures," observes Dr Thomson, were distinguished by that simplicity, ingenuity, and comprehensiveness of view which marked at all times the philosophical turn of his mind, and I have been informed by several eminent medical men who had an opportunity of attending them, and more particularly by one who acted as his clinical clerk in 1765, were delivered with that clearness and copiousness of illustration with which in his lectures he ever instructed and delighted his auditors."

In the winter session of 1760, Dr Alston, who was the professor of materia medica, died, shortly after commencing his course of lectures for the season. It was well known that Dr Cullen had already devoted considerable attention to this branch of medical science; and that he had lectured upon it in the university of Glasgow; and the students of medicine therefore presented a petition, soliciting him to lecture in the place of Dr Alston. Dr Cullen accordingly commenced a course of lectures on materia medica in the beginning of January 1761. Some years afterwards a volume was published entitled "Lectures on the Materia Medica, as delivered by William Cullen, M.D., professor of