The Further Adventures of Robinson Crusoe by Daniel Defoe Chapter 16 Page 20

having passed the river Kama, which in these parts is the boundary between Europe and Asia, and the first city on the European side was called Soloy Kamaskoy, that is, the great city on the river Kama. And here we thought to see some evident alteration in the people; but we were mistaken, for as we had a vast desert to pass, which is near seven hundred miles long in some places, but not above two hundred miles over where we passed it, so, till we came past that horrible place, we found very little difference between that country and Mogul Tartary. The people are mostly pagans; their houses and towns full of idols; and their way of living wholly barbarous, except in the cities and villages near them, where they are Christians, as they call themselves, of the Greek Church: but have their religion mingled with so many relics of superstition, that it is scarce