[Hygiene, dietetics and medicine in arab agricultural calendars].

The author studied nine arab agricultural calendars placed at intervals between the Kitab al-Azmina or the Book of seasons by Jean Mésué (IXth c.) and a tunisian calendar of the XIXth c. of andalusian origin (?). There is a clear relationship between these different calendars, all of them issued from an archetype lost today, which would have been a mixture of basic principles and traditions of different origins. One could no longer identify today with certainty but one could discern its preislamic tradition (the calendar system of the anwâ'), babylonian tradition (the predictions extracted from astronomic, meteorologic or geologic events) and a greek tradition (the influence of the humoral theory). In matter of dietetic, these calendars real authentic almanachs do nothing but reproduce the hippocratic prescriptions. In matter of hygiene, they specify seasons for physical exercices, bath as well as the perfumes to make use of. Otherwise these almanachs mention the most usual affections and the liabale means to cure, or better, to prevent them. Are recommanded differents electuaries including the theriac, trochics, eyewashes and other medications.