Abstract
Of the four outstanding physicians of the Muslim world, Rhazes, Haly Ben Abbas, and Avicenna practiced in the Eastern Caliphate. Albucasis of Spain was a Westerner.1 The surgical writings of Rhazes were followed by many physicians until the contributions of Ambrcise Paré replaced them in the 16th century. Abú Bakr Muhammad ibn Zakariyyá of Ray (Arabic, ar-Rází or Al-Kazi, latinized in the Middle Ages to Rhazes) was born about the year 850 A.D. only a few miles north of Tehran, the modern capital of Iran (Persia). Rhazes was interested in music, particularly the lute in early life, and compiled an encyclopedia of music. Philosophy was another commanding interest. Rhazes' dedication to medicine, not manifest until the age of 30, has been attributed to hospital visits and conversations with the local pharmacist. Thereafter, his rise to fame was rapid. He walked the wards of the Azudi Hospital with students and

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