723Avoiding customary exercise sometimes causes smallpox, to seize a man twice,724 when the matter is not expelled
p.305entirely the first time. Thereafter let him eat figs frequently, for they expel the matter. Smallpox occurs oftener in a hot moist complexion than in a hot dry one, and in little children and youths, rather than in maturity, or old age; for it is not produced in old age but through strength,725 and in a hot moist land. Isaac says, it never seizes old folk: it comes oftener in spring than in winter, and in a south wind rather than a north wind; and staying long in the sun726 disposes a man to smallpox.