5. They are all, occasionally, attended with a yellowness of the skin,
and the eyes.
6. In their relapses, and frequently in their first attack, they all
bear a close alliance with the lunar periods.
7. The intermittent, the remittent, or the continued type; or, in other
words, the milder, the intermediate, or the more malignant form is
assumed, according to the state of vigour, the period of residence in
the climate, and other circumstances of the subject attacked.