Peloponnesian war, origin of, [158-163].

Pericles, policy of, [147-152].

Plague, historians who have described it, [164-166];

——principal recorded, [166-169];

——of Athens, [169-177];

——of Constantinople, [177-183];

——of Florence, [184-198];

——of Milan, [198-214];

——medical treatment and state of science, [214-218];

——of London, [218-231].