Early clinical pathologists 5: the man behind Hassall's corpuscles.

are known as guttate ophttalmicae or HassallHenle's warts.2 Arthur Hill Hassall (fig 1) was born in Teddington, Middlesex, England on 13 December 1817. He was the youngest of five children ofThomas and Ann Hassall.3 Influenced perhaps by his grandfather, father, and elder brother, who all were doctors, Hassall studied medicine in Ireland. He received his first diploma (in midwifery) in 1837 from the Dublin School of Medicine, where he was taught by many prominent physicians and surgeons of the time like Harrison, Apjohn, Colles, Stroke, Graves and Corrigan. In 1839