And here, hero of the scene, glides Beltran, master of the Northern art as school-days made him, skates as of old some young Viking skated, all his being bubbling in a lofty glee, with blue eyes answering this icy brilliance as they dazzle back from the tawny countenance, with every muscle rippling grace and vigor to meet the proud volition, lithely cutting the air, swifter than the swallow’s wing in its arrowy precision, careless as the floating flake in effortless motion, skimming along the lucid sheathing that answers his ringing heel with a tune of its own, and swaying in his almost aerial medium, lightly, easily, as the swimming fish sways to the currents of the tide.  Scoring whitely their tracery of intricate lines, the groups go by in whorls, in angles, in sweeping circles, and the ice shrinks beneath them; here a fairy couple slide along, waving and bowing and swinging together; far away some recluse in his pleasure sports alone with folded arms, careening in the outward roll like the mast of a phantom-craft; everywhere inshore clusters of ruddy-cheeked boys race headlong with their hawkey-sticks, and with their wild cries, making benders where the ice surges in a long swell:  and constantly in Beltran’s wake slips Vivia, a scarlet shadow, while a clumsy little black outline is ever designing itself at her heels as Ray strives in vain to perfect the mysteries of the left stroke.  All about, the keen air breathes its exhilaration, and the glow seems to penetrate the pores till the very blood dances along filled with such intoxicating influence; all above, the afternoon heaven deepens till it has no hidden richness, and between one and the pale gold of the coldly reddening horizon the white air seems hollow as the flaw in some great transparent jewel.  Still they wind away in their gladness, when hurriedly Beltran reaches his hand for the heedless Vivia’s, and hurriedly she sees terrifying grooves spreading round them, a great web-work of cracks,—­the awful ice lifts itself, sinks, and out of a monstrous fissure chill death rises to meet them and ingulf them.  In an instant, Ray, who might have escaped, has hurled himself upon them, and then, as they all struggle for one drowning breath in the flood, Vivia dimly divines through her horror an arm stretched first towards Ray, snatched back again, and bearing her to safety.  Ray has already scrambled from the shallow breach where his brother alone found bottom; waiting hands assist Beltran; but as she lingers that moment shivering on the brink, blindly remembering the double movement of that arm beneath the ice, she silently asks, with a thrill, if he suffered Ray to save himself because he was a boy, and could, or because—­because she was Vivia!