| | CATHOLIC ENCYCLOPEDIA: Italy |
 | | The Arno River, which has an average breadth of from 330 to 500 feet, rises on Mt. Falterona (5400 feet) and flows towards the southeast between the Apennines and the Pratomagno, through a beautiful spacious valley that is the continuation of the Val di Chiana and is called Casentino. |
 | | The rivers of Continental Italy that empty into the Adriatic Sea are divided into four groups: (a) the Po and its tributaries; (b) the Venetian rivers; (c) the rivers of the Romagna, and (d) the rivers of Istria, grouped on account of their special characteristics. |
 | | The middle range of the Abruzzan Apennines parts from the Velino River near Mt. Terminillo and divides into the groups of Mt. Velino and of Mt. Sirente, from which the range is continued to the south-east, by the Scanno Mountains, which are separated from those of Majella by the plains of Solmona and of Cinquemiglia. |
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