The Goddess paused,--the listening bands awhile 570 Still seem to hear, and dwell upon her smile; Then with soft murmur sweep in lucid trains Down the green slopes, and o'er the pebbly plains, To each bright stream on silver sandals glide, Reflective fountain, and tumultuous tide. 575 So shoot the Spider-broods at breezy dawn Their glittering net-work o'er the autumnal lawn; From blade to blade connect with cordage fine The unbending grass, and live along the line; Or bathe unwet their oily forms, and dwell 580 With feet repulsive on the dimpling well. So when the North congeals his watery mass, Piles high his snows, and floors his seas with glass; While many a Month, unknown to warmer rays, Marks its slow chronicle by lunar days; 585 Stout youths and ruddy damsels, sportive train, Leave the white soil, and rush upon the main; From isle to isle the moon-bright squadrons stray, And win in easy curves their graceful way; On step alternate borne, with balance nice 590 Hang o'er the gliding steel, and hiss along the ice. _Argument of the Fourth Canto._ Address to the Sylphs. I. Trade-winds. Monsoons. N.E. and S.W. winds. Land and sea breezes. Irregular winds. 9. II. Production of vital air from oxygene and light. The marriage of Cupid and Psyche. 25. III. 1. Syroc. Simoom. Tornado. 63. 2. Fog. Contagion. Story of Thyrsis and Aegle. Love and Death. 79. IV. 1. Barometer. Air-pump. 127. 2. Air- balloon of Mongulfier. Death of Rozier. Icarus. 143. V. Discoveries of Dr. Priestley. Evolutions and combinations of pure air. Rape of Proserpine. 165. VI. Sea-balloons, or houses constructed to move under the sea. Death of Mr. Day. Of Mr. Spalding. Of Captain Pierce and his Daughters. 195. VII. Sylphs of music. Cecelia singing. Cupid with a lyre riding upon a lion. 233. VIII. Destruction of Senacherib's army by a pestilential wind. Shadow of Death. 263. IX. 1. Wish to possess the secret of changing the course of the winds. 305. 2. Monster devouring air subdued by Mr. Kirwan. 321. X. 1. Seeds suspended in their pods. Stars discovered by Mr. Herschel. Destruction and resuscitation of all things. 351. 2. Seeds within seeds, and bulbs within bulbs. Picture on the retina of the eye. Concentric strata of the earth. The great seed. 381. 3. The root, pith, lobes, plume, calyx, coral, sap, blood, leaves respire and absorb light. The crocodile in its egg. 409. XI. Opening of the flower. The petals, style, anthers, prolific dust. Transmutation of the silkworm. 441. XII. 1. Leaf-buds changed into flower-buds by wounding the bark, or strangulating a part of the branch. 461. 2. Ingrafting. Aaron's rod pullulates. 477. XIII. 1. Insects on trees. Humming-bird alarmed by the spider-like apearance of Cyprepedia. 491. 2. Diseases of vegetables. Scratch on unnealed glass. 511. XIV. 1. Tender flowers. Amaryllis, fritillary, erythrina, mimosa, cerea. 523.