Abu Sahl 'Isa ibn Yahya al-Masihi

Life & Legacy

Abu Sahl 'Isa ibn Yahya al-Masihi al-Jurjani (Persian: ابو سهل عيسى‌ بن‌ يحيى مسيحی گرگانی) was a Christian Persian polymath, physician, and philosopher from ancient Gorgan (Persian: گرگان, Arabic: جرجان), who was also active in fields such as astronomy and mathematics.
He wrote an encyclopedic treatise on medicine of one hundred chapters (al-mā'a fi-l-sanā'a al-tabi'iyyah; Arabic: المائة في الصناعة الطبيعية,Persian: صدباب ابوسهل), which is one of the earliest Arabic works of its kind and may have been in some respects the model of Avicenna's Qanun.
He wrote other treatises on measles, on the plague, on the pulse, and other subjects.