ABSTRACT
The present work is designed to foster the understanding of traditional phenomena and the pattern of changes in the historical transmission of scientific knowledge from the classical antiquity until the Middle Ages. A comparative study is made here of the ideas championed by the classical Greek-Roman and the Hebrew medicine on one side and Maimonides's doctrine on the other, as regards the influence of the environmental air and the wind on the people's health. It results from the analysis of different texts that Maimonides had a very deep knowledge of the main works of both schools and that he was able to fully systematize the knowledge extant on that subject at his time while he did not bring in innovations of any special importance on the matter.
