{312} His wives I dare not speak of, as the Mussulmen consider this an affront. {314} The River Ribon, also called Rione, is considered to be one of the four rivers of Paradise, and was known by the name of Pison. Its waters were formerly held sacred. On account of the number of trunks of trees, it is unnavigable for large ships. {320a} The Circassians are so wild and warlike that no one dare venture into the interior of the country. Little is known of their habits, customs, or religion. Bordering on Circassia are the Atkans, who inhabit the coast country between Mingrelia and Circassia, and are also wild and given to plunder. {320b} Large plains covered with short grass. {321} Mithridates lived in Pantikapaum. The hill at Kertsch is called to this day "Mithridates' Seat." During the excavations in it, which have been made since 1832, many remains were found, such as funeral urns, implements of sacrifice, Grecian inscriptions, handsome figures, and groups. {330a} Constantinople is not lighted--whoever goes out without a lantern is considered suspicious, and taken to the next watch-house.