[Sibyl], name given to a woman, or rather to a number of women, much fabled of in antiquity, regarded by Ruskin as representing the voice of God in nature, and, as such, endowed with visionary prophetic power, or what in the Highlands of Scotland is called "second-sight"; the most famous of the class being the Sibyl of Cumæ, who offered King Tarquin of Rome nine books for sale, which he refused on account of the exorbitant sum asked for them, and again refused after she had burnt three of them, and in the end paid what was originally asked for the three remaining, which he found to contain oracular utterances bearing on the worship of the gods and the policy of Rome. These, after being entrusted to keepers, were afterwards burned, and the contents replaced by a commission appointed to collect them in the countries around, to share the same fate as the original collection. The name is applied in mediæval times to figures representative of the prophets who foretold the coming of Christ; the prophets so represented were reckoned sometimes 10, sometimes 12 in number; they are, says Fairholt, "of tall stature, full of vigour and moral energy; the costume rich but conventional, ornamented with pearls and precious stones."

[Sicilian Vespers], name given to a massacre of the French in Sicily at the hour of vespers on the eve of Easter Monday in 1282, the signal for the commencement being the first stroke of the vesper bell; the massacre included men and women and children to the number of 8000 souls, and was followed by others throughout the island.

[Sicily] (3,285), the largest island in the Mediterranean, lying off the SW. extremity of Italy, to which it belongs, and from which it is separated by the narrow strait of Messina, 2 m. broad; the three extremities of its triangular configuration form Capes Faro (NE.), Passaro (S.), and Boco (W.); its mountainous interior culminates in the volcanic Etna, and numerous streams rush swiftly down the thickly-wooded valleys; the coast-lands are exceptionally fertile, growing (although agricultural methods are extremely primitive) excellent crops of wheat and barley, as well as an abundance of fruit; sulphur-mining is an important industry, and large quantities of the mineral are exported; enjoys a fine equable climate, but malaria is in parts endemic; the inhabitants are a mixed—Greek, Italian, Arabic, &c.—race, and differ considerably in language and appearance from Italians proper; are ill-governed, and as a consequence discontented and backward, even brigandage not yet being entirely suppressed. Palermo, the largest city, is situated on the precipitous N. coast. As part of the "Kingdom of the Two Sicilies," comprising Sicily and Naples, it was overrun by Garibaldi in 1860, and in the same year was incorporated with the kingdom of Italy.

[Sickingen, Franz von], a German free-lance, a man of a knightly spirit and great prowess; had often a large following, Götz von Berlichingen of the number, and joined the cause of the Reformation; lost his life by a musket-shot when besieged in the castle of Landstuhl; he was a warm friend of Ulrich von Hutten (1481-1523).

[Sicyon], a celebrated city of ancient Greece, was situated near the Corinthian Gulf, 7 m. NW. of Corinth; was an important centre of Grecian art, especially of bronze sculptures and painting; in the time of Aratus (251 B.C.) figured as one of the chief cities of the Achæan League; only a few remains now mark its site.

[Siddons, Sarah], the greatest tragic actress of England, born at Brecon, the daughter and eldest child of Roger Kemble, manager of an itinerant theatrical company; became early a member of her father's company, and at 19 married an actor named Siddons who belonged to it; her first appearance in Drury Lane as Portia in 1755 was a failure; by 1782 her fame was established, after which she joined her brother, John Kemble, at Covent Garden, and continued to act there till her retirement in 1812; she was distinguished in many parts, and above all Lady Macbeth, in which character she took farewell of the stage; she appeared once again in London after this in 1815, for the benefit of her brother Charles, and again a few nights in Edinburgh in aid of a widowed daughter-in-law (1755-1831).

[Sidereal Year], the period during which the earth makes a revolution in its orbit with respect to the stars.

[Sidgwick, Henry], writer on ethics, born at Shipton, Yorkshire; professor of Moral Philosophy at Cambridge; "Methods of Ethics," being a compromise between the intuitionalists and utilitarians, "the Principles of Political Economy," and the "Elements of Politics"; he holds a high place in all these three studies; b. 1838.

[Sidlaw Hills], a range of hills extending from Kinnoul Hill, near Perth, NE. to Brechin, in Forfarshire; most interesting point Dunsinane (1114 ft.).

[Sidmouth] (4), a pretty little watering-place on the S. Devonshire coast, 14 m. ESE. of Exeter; lies snugly between high cliffs at the mouth of a small stream, the Sid; is an ancient place, and has revived in popularity since the opening of the railway; has a fine promenade 1½ m. long.