Note (4) — 36.—The countries in which I have been, that belong to Tartary.

(4.) “Ibissibur.”—In chapter 25, Schiltberger describes a country called “Ibissibur”. That there was a city of the name is clearly established by the Catalan atlas and Pizzigani map, in which we find Sebur, near a chain of mountains called “los montes de Sebur”, evidently the South Ural, styled Sibirsky kamian in a Russian work on ancient hydrography (Knyga bolshem. Tchertejou, 151, St. P., 1838).