The King or Queen.—Address in writing: To the King's (Queen's) most excellent Majesty. Say: Sire or Madam, Your Majesty.

The Royal Family.—His Royal Highness (H.R.H.) the Prince of Wales, His Royal Highness the Duke of C——, His Royal Highness Prince A——. A royal duke should be addressed as Sir, not My Lord Duke; and referred to as Your Royal Highness. A princess is addressed Her Royal Highness the Duchess of ——, Her Royal Highness Princess A——; and personally as Madam, Your Royal Highness.

Duke and Ducal Family.—His Grace the Duke of ——; My Lord Duke, Your Grace. Her Grace the Duchess of ——; Madam, Your Grace. The duke's eldest son is in law only an esquire, but in courtesy takes a secondary title of his father, and is addressed as if he held it by right. A younger son is addressed Lord J—— B——; My Lord, Your Lordship; a daughter, Lady M—— B—— (Christian and surname); Madam, Your Ladyship. A duke's, marquis's, or earl's daughter marrying a commoner simply changes her surname for his.

The Lord-lieutenant of Ireland is styled His Excellency, or, if a duke, His Grace, and addressed according to his titular rank.

Marquess.—The Most Honourable the Marquess of ——; My Lord Marquess, My Lord. The eldest son has a secondary title of his father, as in the case of a duke's eldest son; the younger sons and the daughters are all addressed as the younger sons and daughters of a duke.

Earl.—The Right Honourable the Earl of ——; My Lord, Your Lordship. The Right Honourable the Countess of——; Madam, Your Ladyship. The eldest son is addressed by a secondary title of his father; younger son, The Honourable G—— T——; Sir; the daughter, as duke's and marquess's daughter.

Viscount.—The Right Honourable the Viscount ——; My Lord, Your Lordship. The Right Honourable the Viscountess ——; Madam, Your Ladyship. Son: The Honourable A—— B—— (Christian and surname); Sir. Daughter: The Honourable J—— C—— (Christian and surname); Madame; if married, The Honourable Mrs. —— (married name).

Baron.—The Right Honourable Lord ——; My Lord, Your Lordship. The Right Honourable the Lady ——; Madam, your Ladyship. Son: The Honourable J—— C——; Sir. Daughter: The Honourable M—— H——; if married, The Honourable Mrs. ——, same as viscount's daughter.

Baronet.—Sir A—— B——, Baronet; Sir; more familiarly Dear Sir A——.

Knight.—Sir C—— D——, Kt., or K.C.S.I., K.C.B., G.C.B., &c., according to rank. The wives of baronets and knights are styled Lady, Lady ——.

Archbishop.—His Grace the Lord Archbishop of ——; My Lord Archbishop; Your Grace. An archbishop is also styled Most Reverend.

Bishop.—The Right Rev. the Lord Bishop of ——; My Lord. The wives of prelates have no special title. Bishops not connected with the English established church may be addressed—The Right Reverend Bishop ——; Right Reverend Sir.

Dean.—The Very Reverend; Sir; Mr. Dean.

Members of the Privy Council, members and ex-members of cabinet, the Speaker of the House of Commons, the Lord Chancellor, the Lord Chief Justice and the Lords Justices, the Lord Advocate, the lords of the treasury and admiralty, are called Right Honourable; the justices (not being lords justices) are styled Honourable. Ambassadors, governors of colonies, &c., are styled Excellency.

The Lord Mayors of London, York, Dublin, &c., and the Lord Provost of Edinburgh, are styled Right Honourable; the Lord Provost of Glasgow, Honourable. A Mayor is addressed as Right Worshipful. Lords of Session (Scotland) have the courtesy title of Lord, are addressed as My Lord, Your Lordship, and also called Honourable. Sheriffs and their substitutes are addressed in their courts in Scotland as My Lord.

In the United States persons holding official rank are similarly addressed; thus the President is styled His Excellency, as are also governors of states and foreign ministers; the vice-president, lieutenant-governors, senators, representatives, judges, and mayors are styled Honourable.

Adduc′tor, a muscle which draws one part of the body towards another: applied in zoology to one of the muscles which bring together the valves of the shell of the bivalve molluscs.

Adel′. See Adal.

Adela, born 1062, died 1137, fourth daughter of William the Conqueror, wife of Stephen, Count of Blois and Chartres, and mother of Stephen, King of England. She proved herself an able ruler and a generous patroness of learning while her husband was abroad with the First Crusade; and after his death she acted as regent for his sons.

Adelaide (ad'e-lād), the capital of South Australia, 6 miles east from Port Adelaide (on St. Vincent Gulf), its port, with which it is united by railway, founded in 1837, and named after the queen of William IV. Situated on a large plain, it is built nearly in the form of a square, with the streets at right angles, and is divided into North and South Adelaide, separated by the river Torrens, which is crossed by several bridges, and by means of a dam is converted into a fine sheet of water. The public buildings comprise the Government House, the town hall, the post and telegraph offices, the Government offices, court-houses, the houses of legislature, the University, South Australian Institute, &c. There is a good service of tramway cars. Adelaide is connected by railway with Melbourne, and is the terminus of the overland telegraph to Port Darwin. It has a large trade. Pop. (including suburbs), (1919), 256,660.

Adelaide, daughter of George, Duke of Saxe-Coburg-Meiningen, and wife of the Duke of Clarence, afterwards William IV, King of England; born 1792, died 1849; married 11th July, 1818, had two daughters, who died in infancy. She became queen-consort on William attaining the throne in 1830, and was for a time unpopular from being supposed to be averse to reform. On the death of William she passed into private life, with an allowance of £100,000 a year.

Adelard of Bath, an English philosophical writer of the twelfth century. He travelled through Spain, the north of Africa, Greece, and Asia Minor, and acquired from the Arabs much knowledge, which he put in systematic shape. Chief works, Perdifficiles Quæstiones Naturales and De Eodem et Diverso.

Adelsberg (ä'dėlz-berh), a small town of North Italy, in Carniola, midway between Trieste and Laibach, remarkable for the wonderful stalactite cave in its vicinity. The most extended of the ramifications which compose it reaches to over 2 miles from the entrance, at which the River Poik disappears, and is heard rushing below. The stalactites and stalagmites are of the most varied and often beautiful forms, and have received fanciful appellations, as they resemble columns, statues, &c.

Adelung (a˙d'e-lu¨ng), Friedrich von, nephew of J. C. Adelung, was a distinguished philologist. He was tutor to the Grand-duke Nicholas, afterwards Emperor of Russia, and became president of the Academy of Sciences at St. Petersburg (now Petrograd). Born 1768, died 1843.

Adelung, Johann Christoph, a German philologist, born 1732, died 1806. In 1759 he was appointed professor in the Protestant academy at Erfurt, and two years after removed to Leipzig, where he applied himself to the works by which he made so great a name, particularly his German dictionary, Grammatisch-kritisches Wörterbuch der hochdeutschen Mundart (Leipzig, 1774-86), and his Mithridates, a work on general philology. In 1787 he was appointed librarian of the public library in Dresden—an office which he held till his death.