He performed 480, 000 surgical operations including 1300 urinary calculus.
2.
Supersaturation of the urine is a necessary, but not a sufficient, condition for the development of any urinary calculus.
3.
In 1833 he obtained the Jacksonian prize of the Royal College of Surgeons of England for a work on " The Formation, Constituents, and Extraction of the Urinary Calculus ", which was published in 1835.
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