But now secure the painted vessel glides, The sunbeams trembling on the floating tides: While melting music steals upon the sky, And soften'd sounds along the waters die; 50 Smooth flow the waves, the zephyrs gently play, Belinda smiled, and all the world was gay. All but the Sylph--with careful thoughts oppress'd, The impending woe sat heavy on his breast. He summons straight his denizens of air; The lucid squadrons round the sails repair; Soft o'er the shrouds aërial whispers breathe, That seem'd but zephyrs to the train beneath. Some to the sun their insect-wings unfold, Waft on the breeze, or sink in clouds of gold; 60 Transparent forms, too fine for mortal sight, Their fluid bodies half dissolved in light. Loose to the wind their airy garments flew, Thin glittering textures of the filmy dew, Dipp'd in the richest tincture of the skies, Where light disports in ever-mingling dyes; While every beam new transient colours flings, Colours that change whene'er they wave their wings. Amid the circle, on the gilded mast, Superior by the head, was Ariel placed; 70 His purple pinions opening to the sun, He raised his azure wand, and thus begun: 'Ye Sylphs and Sylphids, to your chief give ear, Fays, fairies, genii, elves, and demons hear! Ye know the spheres, and various tasks assign'd By laws eternal to the aërial kind. Some in the fields of purest ether play, And bask and whiten in the blaze of day: Some guide the course of wandering orbs on high, Or roll the planets through the boundless sky: 80 Some, less refined, beneath the moon's pale light Pursue the stars that shoot athwart the night, Or suck the mists in grosser air below, Or dip their pinions in the painted bow, Or brew fierce tempests on the wintry main, Or o'er the glebe distil the kindly rain. Others on earth o'er human race preside, Watch all their ways, and all their actions guide: Of these the chief the care of nations own, And guard with arms divine the British throne.[31] 90 'Our humbler province is to tend the fair, Not a less pleasing, though less glorious care; To save the powder from too rude a gale, Nor let the imprison'd essences exhale; To draw fresh colours from the vernal flowers; To steal from rainbows, ere they drop in showers, A brighter wash; to curl their waving hairs, Assist their blushes, and inspire their airs; Nay, oft, in dreams, invention we bestow, To change a flounce, or add a furbelow. 100