About eleven o'clock Sunday morning we left the broad, tranquil Vólga and turned into the swifter and muddier Káma, a river which rises in the mountains of the Urál on the Siberian frontier, and pursues a southwesterly course to its junction with the Vólga, fifty or sixty miles below Kazán. In going from one river to the other we noticed a marked change, not only in the appearance of the people,