Within the last few years, a period which may well be said to have been initiated by the publication of the late Professor Browne's Arabian Medicine in 1921, there has sprung up a new interest in the scientific accomplishments of Islamic Persia. The foundations of this study were laid in the last century by the German publication of certain Arabic texts and historical works and by Leclerc's Histoire de la Médecine arabe. In this first period must be included a short note by Professor Nicholson on the Ḥifẓ-ul-Ṣiḥḥat (or Ḥifẓ-ul-Badan) of Fakhr-ul-Dīn Rāzī, which was published in the Society's Journal for January, 1899.