Note 424 — ON AIRS, WATERS, AND PLACES.
Francis Adams translation
It is but too apparent that there is a lacuna in the text here. A chapter devoted to an examination of the peculiarities of the Egyptians and Libyans is evidently lost. As M. Littré has remarked, Galen appears to refer to the contents of the lost chapter. (Opera, tom. xvi., p. 392; ed. Kühn.)