Note 2766 — BOOK IX. THE NATURAL HISTORY OF FISHES. (continued 2)

Cuvier says, that there are some maladies by which individuals are attacked; but that it is not uncommonly the case that certain species are attacked universally, as it were, by a sort of epidemic. There was an instance of this, he says, in the lake of the valley of Montmorency, where numbers of the fish were suddenly to be seen floating dead on the surface, the skin of which was covered with red spots, while at the same time their flesh had become disagreeable to the taste, and unwholesome.