c. 865

Al-Razi, physician and critic of Galen

Al-Razi (born 864 or 865 at Ray, died 925 or 935) heads hospitals at Ray and Baghdad. He writes on smallpox and measles and in Doubts about Galen challenges humoral theory. His al-Hawi and Liber Almansoris reach Latin in 1279 and c. 1180.