Rowland 4056 Royal the Grand Challenge at Henley, and their showing was splendid. They defeated the London and Thames Rowing Clubs in the trials, and were defeated by Leander in the finals only after a glorious struggle. Since 1878 the dual meet between Yale and Har- vard has been held at New London, Conn. Of late years school crews have attained dis- tinction in the Henley races. The American Brown and Nichols crew of Cambridge, Mass, und the crew of Kent School, Conn, have both won the Thames Challenge Cup in Eng- land. Professional rowing flourished in the United States before the Civil War. The first championship races of this kind were rowed in 1837-8 between Stephen Roberts and Sid- ney Dorian, both of New York. Dorian won the first race, Roberts the second and third, and the fourth was ended by interfer- ence with the course from other boats. The •five Ward brothers and three Biglin brothers were the most noted oarsmen of the late 'fifties and 'sixties, when professional sculling reached its greatest popularity. Rowland, Henry Augustus (1848-1901), American physicist, professor of physics in Johns Hopkins University, which chair he re- tained until his death. To Professor Row- land are due many notable investigations in physics. He made an absolute determination of the ohm that helped to fix the value of this important electrical unit; and his work in spectroscopy, especially the spectrum of the sun, brought him an international repu- tation. His contributions in the fields of elec- tricity and magnetism were hardly less note- worthy. Roxana, daughter of a Bactrian chieftain. Alexander the Great married her in 327 B.C. In 311 Cassander put her to death. Royal Families of Europe. The belief in divine right of kings has manifested itself perhaps more forcibly in modern times by the persistent practice of intermarriage among their relatives, until, at the time of World War I, nearly all of the royal houses of Europe were closely related by blood ties. Reigning Families. — BELGIUM.—Upon the erection of the kingdom of Belgium in 1830, Leopold i was chosen as king, and his son Leopold n succeeded him in 1865, until hie death in 1909. His nephew, Albert i fol- lowed. Albert i married Elizabeth of Ba- varia. They had two sons and a daughter: Crown Prince Leopold (born 1901) married in 1926 Princess Astrid, daughter of Prince Charles, brother of King Gustaf v of Swed- en; offspring, Josephine Charlotte (born 1927), and Prince Baudoin (born 1930). On the death of Albert i (Feb. 17,1934)» Leopold HE succeeded to the throne. In 1940 he became a prisoner in Germany. BULGARIA.—King (tsar) Boris in, son of ex- king Ferdinand of Bulgaria. Boris was born in 1894 and succeeded on the abdication of his father in 1918. In 1930 he was married to Princess Giovanna, third daughter of Victor Emmanuel m of Italy; offspring: Marie Louise (1933). Boris died in 1943. DENMARK. — King Christian x succeeded in 1912 on the death of his father, Frederick vm. His grandfather, Christian ix, was fa- ther of the Empress Marie of Russia, wife of Emperor Alexander m of Russia and mother of Nicholas n; also of Alexandra, wife of Ed- ward vn of Great Britain and mother of George v; his son, George, became King of the Hellenes in 1863, assassinated in 1913 and succeeded by his son Constantine. Christian x married Alexandrine of Mecklenburg; off- spring: Crown Prince Frederick (born 1899) and Prince Knud (1900). GREAT BRITAIN.—George v, son of Edward vn and grandson of Queen Victoria, succeeded on his father's death in 1910. His mother was the Danish princess, Alexandra. He married his cousin, Victoria Mary of Teck, in 1893. Of their five living children the eldest is the Duke of Windsor (1894) who upon his fath- er's death in 1936 became King Edward vra, and abdicated same year. He was succeeded by his next younger brother George vi (1895) who married, 1923, Lady Elizabeth Bowes-Lyon, daughter of the Earl of Strath- more and Kinghorne; offspring: Princess Elizabeth (1926)—heir to the throne, and Princess Margaret (1930). Other children of George V are: the Duke of Gloucester, mar- ried Lady Alice Montagu-Douglass-Scott; the Duke of Kent (died 1942) married to Princess Marina of Greece and father of a son and a daughter; and Princess Mary, wife of the Earl of Harewood and mother of two sons. George v was first cousin to the German ex-emperor, the last Russian emperor, the King of Den- mark, the late King Constantine of Greece, and the King of Norway, who married his sis- ter Maud. George v was also first cousin to ex-queen Victoria of Spain, to the late queen Marie of Roumania and to the late crown princess of Sweden. Edward VOT on his ab- dication became Duke of Windsor. In 1937 he married Mrs. Wallis Warfield Simpson, an American, at Monts, France,