The Portuguese, according to Vasconcello, shunning all fanciful derivations, were long satisfied to term the Congo "Rio de Patron" (Rio do Padrao) from the first of memorial columns built at its mouth. In 1816 Captain Tuckey's expedition learned with Maxwell that the stream should be called, not Zaire, but Moienzi Enzaddi, the "great river" or the "river which absorbs all other rivers." This thoroughly corrupted name, which at once found its way into popular books, and which is repeated to the present day even by scientific geographers, suggested to some theorists "Zadi," the name of the Niger at Wassenah according to Sidi Harriet, as related by the American, James Riley, of the brig "Commerce," wrecked on August 28, 1815: others remembered "Zad" which Shaykh Yusuf (Hornemann), misleading Mungo Park, learned to be the Niger east of Tinbuktu, "where it turns off to the southward." I need hardly say that this "Zadi" and "Zad" are evident corruptions of Bahr Shady, Shary, Shari, Chad, Tsad, and Chadda, the swampy lake, alternately sweet and brackish, which was formerly thrown by mistake into the Chadda River, now called the Binue or Bimúwe, the great eastern fork of the Negro-land Nile: the true drainage of the Chadda in ancient times has lately been determined by the adventurous Dr. Nachtigal. Mr. Cooley[FN#12] applied, as was his wont, a superficial knowledge of Kibundo to Fiote or Congoese, and further corrupted Moienzi Enzaddi to Muenya (for Menha or Menya) Zinzádi-this Angolan "emendation," however, was not adopted. The natives dwelling upon the Congo banks have, as usual in Africa, no comprehensive generic term for the mighty artery of the West Coast. Each tribe calls it by its own name. Thus even in Fiote we find "Mulángo," or "Lángo," the water; "Nkoko," the stream, "Mwánza," the river, and "Mwanza Nnenne," the great river, all used synonymously at the several places. The only proper name is Mwánza Nzádi, the River Nzadi: hence Zaire, Zaïre, Zahir, Zaira the "flumen Congo olim Zaida" (C. Barlé)--all corruptions more or less common.