The Studies in the History and Culture of the Islamic Orient (STIO) is the series of “Supplements” to the journal Der Islam. Both are published by the Section for the History and Culture of the Near East in the Asian-African Institute of the University of Hamburg. The Section was established in 1908, before the foundation of the University of Hamburg. Under its first Director, C.H. Becker, it was the first academic centre in Germany in which teaching and research concentrated on the historical and cultural aspects of the Islamic world, and not just on philological issues. Many of Germany’s leading authorities in Islamic Studies have studied and/or taught here. The “Supplements” have maintained the same high quality and met the same high demands as the journal Der Islam and have published numerous studies on the history and culture of the Islamic world which have represented milestones in their relevant fields. The “New Series” of Supplements appearing since 2004 carries this tradition forward and provides a platform for publishing studies on the history and culture of the Islamic world from the beginnings of Islam up to the present day.

From the Foreword by the Series Editor «The publication of this fourth volume of the Corpus Alchemicum Arabicum (CALA IV) is a milestone in achieving our aim to make the wealth of Arabic alchemy more easily accessible for research. Maslama b. Qasim al-Qurtubi (died 353/964), the author of this Rutbat al-ßakim, provides a basic teaching of alchemy, quoting extensively from Zosimos’ Mushaf as-suwar. Zosimos was an alchemist who lived in the 3rd/4th century and is generally considered to be the first alchemist known to us by his true name… The significance of the present publication is to be seen in the relationship to the earlier volumes of this series, especially to CALA II and CALA III. The author of the Rutbat al-hakim emphasises the importance of understanding symbols (rumuz). The publication of the Rutbat al-hakim as CALA IV rounds up the first four publications in this series: They started with the Kitab hall ar-rumuz (Book of the Explanation of the Symbols), written by the Arab alchemist Muhammad ibn Umail (10th century). Then in the next volumes, in CALA II and CALA III, there came a further clarification of the symbols given by the Greek alchemist Zosimos, and now, in CALA IV, we find an overview of the knowledge and significance of the symbols (rumuz), written by another Arab alchemist.»