KINDS AND DATES HISTORICAL ballads form a class which it is comparatively easy to separate from all others. They arise immediately out of the events they narrate, not later than within the memory of living men. Any corpus which is rich in ballads of this kind offers an easy and sure chronology; for not only are the events datable, but there are often other lines of testimony as to the age of the ballad. It may, for instance, have provided material for a chronicle or be the subject of an allusion. In the older strata of European balladry, historical pieces are, like narratives in general, copious; and the earliest dates they imply are as old as any that can be fixed for the genre itself. In the course of time historical ballads die out more rapidly than others, and they are seldom passed on to other nations. If they migrate (as the French ballads on Francois Fs imprisonment and Gabrielle d'Estrees's death have passed to Italy and Germany), this will generally be due to their novelesque or emotional interest, or to the charm of a tune. Because they are perishable and stationary elements of the older epochs of balladry, they are not abundant in ballad corpora of secondary formation. Their absence is one of the signs of dependence, as of Bohemia on Germany and Bulgaria on Serbia. National themes are encountered among such ballads in episodic or personal aspects. The ballad does not compete with the epic poem. More often the theme is partisan or local rather than national: civil wars and frontier defence. The pieces may cohere round the name of a national hero, like Marko Kraljevic and Marsk Stig; and in such a case the historical element may become ex- ceedingly tenuous. In Russia there were persons known as Dobrynja Nikitic, Aljosa Popovic, Vladimir, &c., and that is almost all that is historical in the Kiev cycle. One may then justly doubt whether these 'byliny' should be classed as historical at all, or merely as adventurous. They are accepted as historical by the hearers, who are not much preoccupied with the accuracy of the details. On a somewhat lower scale are those ballads which take for heroes the persons of outlaws, haiduks, klephts, robber barons, bandits, murderers, and plain thieves; and these, too, have their descending order of merit. At the one end of the scale we encounter