A COMMENTARY, by Al-Hasan Ibn Yisuf Ibn al-Mutahhar, upon a treatise of logic, by Nasír al-Din Muhammad al-Túsi, intitled al- Tajríd fi 'ilm al-Mantik; in Arabic;-Twenty-two short treatises upon metaphysical questions, by Nasír al-Din al-Túsi, Sadr al-Dín al-Shirázi, Abu 'Ali Ibn Síná, Abu Nasr ...