When Su = o, (I + 2wu) () (1 + zwu) -1 is an operator which shifts (without further change) the tri - quaternion operand an amount given by u in direction and distance.
Then, entering a deep gorge with lofty rock walls and magnificent scenery, it runs south-east to its junction with the Murad Su.
It then runs west, south and east round the rock-mass of Musher Dagh, and receives (right) the Kuru Chai, down which the Sivas-Malatia road runs, and the Tokhma Su, from Gorun (Gauraina) and Darende.
The others, which terminate streams, are the Bahr el-Ateiba, which receives the waters of Damascus; the Mat, into which the Kuwaik flows below Kinnesrin; and the Ak Deniz, or Bahrat Antakia, the ancient Lake of Antioch, which collects the waters of the Kara Su and Afrin, the southward from the watershed which shuts off Commagene.
The best modern critical account in Spanish is Salvador Brau, Puerto Rico y su historia (Valencia, 1894).
