For more than two centuries Russian orthodoxy has been undermined by obscure sects, unknown to foreigners, and little known to Russians themselves. Beneath the imposing pile of the official Church have been hollowed out vast underground burrows and a labyrinth of gloomy crypts, which form a retreat for the popular beliefs and superstitions. We propose to descend into these catacombs of ignorance and fanaticism. We shall attempt to map them out, to explore their remotest nooks, and to lay hold in this, their hiding-place, of the character and aspirations of the people. Nothing could yield better means of acquaintance with the genius of the nation and the groundwork of Russian society. The _Raskol_, with its thousand sects, is perhaps the most original feature of Russia, and what most sharply distinguishes it from Western Europe. Like rivers colored by the soil through which they flow, religions often change their characteristics according to the nations who practice them. The Raskol is Byzantine Christianity issuing from the Russian lower classes. In the thick and muddy waters of Muscovite sectarianism we can distinguish foreign admixtures, sometimes Protestant, sometimes Jewish, or even Mohammedan, more frequently Gnostic or pagan. The Raskol, nevertheless, remains wholly different, in principle and in tendency, from all the religions and religious movements of the world: it is original and national from the foundation up. So thoroughly Russian is it that outside of its native country it has never made a proselyte, and even within the empire has hardly any adherents excepting among the people of "Greater Russia," the most thoroughly national of all. So spontaneous has been its growth that in all its phases it is its own best interpreter, and if confined to an isolated continent, its development would have been the same. The Raskol is the most national of all the religious movements to which Christianity has given birth, and at the same time the most exclusively popular. It took its rise, not in the schools, nor in the monasteries, but in the mujik's hovel and in the shop; and it has never spread beyond its birthplace. Hence, the student of politics and the philosopher take a keener interest in ignorant heresies than is to be found in their doctrines alone. These sects of lately-liberated peasants claim an attention by no means due to their meagre theology, from their being the symptom of a mental condition and a social state for even a distant approach to which all Western Europe would be scoured in vain.