Deep in the Bohemian forest, which has now dwindled to a few scattered woodlands, there abode, in the primeval times, while it stretched its umbrage far and wide, a spiritual race of beings, airy and avoiding light, incorporeal also, more delicately fashioned than the clay-formed sons of men; to the coarser sense of feeling imperceptible, but to the finer, half-visible by moonlight; and well known to poets by the name of Dryads, and to ancient bards by that of Elves. From immemorial ages, they had dwelt here undisturbed; till all at once the forest sounded with the din of warriors, for Duke Czech of Hungary, with his Sclavonic hordes, had broken over the mountains, to seek in these wild tracts a new habitation. The fair tenants of the aged oaks, of the rocks, clefts and grottos, and of the flags in the tarns and morasses, fled before the clang of arms and the neighing of chargers: the stout Erl-King himself was annoyed by the uproar, and transferred his court to more sequestered wildernesses. One solitary Elf could not resolve to leave her darling oak; and as the wood began here and there to be felled for the purposes of cultivation, she alone undertook to defend her tree against the violence of the strangers, and chose the towering summit of it for her residence. [12] From _Jo. Dubravii Historia Bohemica_, and _AEneae Sylvii Cardinalis de Bohemarum Origine ac Gestis Historia_. Among the retinue of the Duke was a young Squire, Krokus by name, full of spirit and impetuosity; stout and handsome, and of noble mien, to whom the keeping of his master's stud had been entrusted, which at times he drove far into the forest for their pasture. Frequently he rested beneath the oak which the Elf inhabited: she observed him with satisfaction; and at night, when he was sleeping at the root, she would whisper pleasant dreams into his ear, and announce to him in expressive images the events of the coming day. When any horse had strayed into the desert, and the keeper had lost its tract, and gone to sleep with anxious thoughts, he failed not to see in vision the marks of the hidden path, which led him to the spot where his lost steed was grazing.