Every day, and sometimes two or three times in the day, they passed places where the river forked, as though each branch passed round an island, but our travellers perceived that these branches did not meet again; and they conjectured that they all fell into the Amazon by separate embouchures.
"Popular Adventure Tales"
Mayne Reid
In a few scattered places there are deep, precipitous ravines, opening to the sea, whose embouchures form difficult but still possible landing-places for the fishermen.
"The Sea: Its Stirring Story of Adventure, Peril, & Heroism. Volume 1"
Frederick Whymper
It appears therefore that this main range contains within it the sources of Roe's River, Prince Regent's and Glenelg Rivers, most probably the Fitzroy, and those that run into Cambridge Gulf and perhaps others that have their embouchures between this last and Admiralty Gulf.
"Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 1 (of 2)"
George Grey