The Alexandrian Summaries of Galen´s On Critical Days: Editions and Translations of the Two Versions of the Jawāmī`, with an Introduction and Notes, by Gerrit Bos and Y. Tzvi Langermann
(First paragraph) The vehicle of Galen´s enormous impact on Medieval Muslim, Christian, and Jewish physicians was not only his books, which were translated from Greek into Arabic, Hebrew, Latin, and Persian, but also the so-called “Alexandrian Summaries„ of his works produced in Late Antiquity. They overlap for the most part with the sixteen Galen´s treatises which were selected for the curriculum of medical studies in pre-Islamic Alexandria and in the early centuries of Islam. They do not merely shorten the originals, but show a critical attitude towards Galen´s doctrine and sometime revise it. Galen´s writings were thus transformed by deliberate intervention on the part of unnamed medical writers and sometime it was this revised Galen to enter into the medieval medical learning.
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