HEBERDEN. 199 about ten years longer as a practitioner of physic, and gave an annual course of lectures on the Ma- teria Medica. In 1746 he became a fellow of the Royal College of Physicians in London, and two years afterwards he left Cambridge, having pre- sented to St. John's College the specimens which had been employed in his lectures. He also added to this donation, a few years afterwards, a collection of astronomical instruments of some value. He now established himself in London, was elected a fellow of the Royal Society in 1769, and was employed in a very extensive medical practice during more than thirty years. When he became sensible that his age required indulgence, he passed the summer at a house which he had pur- chased at Windsor ; but he continued his practice in the winter for .some years longer. In January 1760, he married Mary, daughter of W. Wool- laston, Esq., by whom he had five sons and three daughters ; but he survived them all, except the present Dr. Wilham Heberden,* and Mary, married to the Rev. G. Jenyns. In 1778, he was made an honorary member of the Royal Society of Medicine at Paris. Dr. Heberden's first publi- cation seems to have been a short essay on the incongruous composition of the Mithridate and Theriaca, entitled A ntit/ieriaca, 8vo. 1745. — 2. He sent to the Royal Society an Account of a very large hu7nan Calculus, weighing more than two pounds and a quarter avoirdupois, Phil. Trans. XLVL, 1750, p. 596.-3. Account of the effect of Lightning at South vvald in Essex, Ph. Trans. LIV.,
- Well known as the author of very valuable Observations on the
Increase and Decrease of different Diseases. 4to. Lond. 1801.
