ARNIM-BOYTZENBURG, Hans Georg Von, German general and diplomatist: b. Boytzenburg 1581: d. Dresden 1641. He took part in the Russian War on the side of Gustavus Adolphus and afterward fought with Poland against the Turks. He is chiefly known through his attachment for Wallen stein, by whom he was induced in 1626 to join the imperial forces in. spite of his Protestant convictions. He rose rapidly to the rank of field marshal. When Wallenstein was dis missed and German Protestantism was tot tering he quit the imperial service for that of the Elector of Saxony. He fought on the side of the Swedes at Breitenfeld (1631), at the head of the Saxon army, and was active in forming an alliance of these two powers in the cause of their common religion. The re appearance of Wallenstein caused him to hes itate and open negotiations, without conceal ing his plans from Gustavus. After the death of that King he renewed overtures to Wallen stein. But on the assassination of his former commander he began active operations once more. He won an important victory at Lieg nitz in 1634, but became more estranged from the Swedes. The peace of Prague witnessed his withdrawal from active life. In 1638 he was imprisoned in Stockholm by the Swedes, but having made his escape, he returned to Saxony and died in the midst of plans to raise an army to liberate German soil from foreign armies. Consult 'Wallenstein, P
K. G. 'Wallenstein and Arnim' (1850) and 'Der rage Friede' ( in Raumer's Hi sto ri sch e s Ta sche nbuch, 1858) ; Kirchner, E. D. M., 'Das Schloss Boytzenburg) (1860) ; 'Archly fiir die sach siche Geschichte' (Vol. VIII, 1870).
ARNO (anciently Arnus), one of the lar gest rivers of Italy. It divides Tuscany into two parts and rises in the Apennines on the east of Florence on the border of Romagna, 15 miles west of the sources of the Tiber. It then turns southward toward Arezzo, after which it runs westward through Florence and enters the Mediterranean four miles below Pisa. In ancient times Pisa was situated at the mouth of the river. Near Arezzo the Arno is connected with the Tiber through the canalized portion of its tributary, the Chiana. It is navigable for barges as far as Florence. In many places its banks are protected by dykes because of the frequent rises to which it is subject. From any hill in the neighbor hood of Florence the view into the valley of the Arno is charming. The entire course of the river is about 140 miles.