Corpus of Electronic Texts Edition
An Irish Version of Gualterus de Dosibus (Author: Walter de Agilon/Galterius Agilinus)

paragraph 97

It is relative to the quantity of the measurement that Galen said in his Megategne, ‘Quantitas eorum quae offeruntur letteris non est determinata’: i.e. ‘the quantity of things administered is not determined by scholarship,’ i.e. by the senses; for neither the quantity of the measurement of the humor, nor the quantity of the efficacy of the cure is easily determined by the senses but according to the judgment, or opinion of the physician who is close to being exact. For that reason Haly says: ‘Oportet quod medicus sit bone rememoracionis, velocis solercie sane intellectus, et cetera:’ i.e. it is necessary for the physician to have a good memory, ready wit, sound understanding, good eyesight, and much balance.39 Avicenna says, however, that the measure of the quantity of the amount is recognized in accordance with the measuring system of the profession, from two circumstances, i.e. from the nature of the member and the extent of the affection, and from the suitability of particular things such as class, age, habits, season, predisposition, calling, strength, and mode of administration.