RIO-GRANDE, a river of Africa, which runs from east to west through Negroland, and falls into the Atlantic ocean, in 11 degrees of latitude. Some take it to be a branch of the Niger, of which there is not the least proof.
Rio-Grande, a river of South America, in Brasil, which has its source in an unknown country: it crosses the captainship of Rio-Grande, and falls into the sea at Natal los Reyes.
Rio-Janeiro, a river of South America, which rises in the mountains west of Brasil, and, running east thro' that country, falls into the Atlantic Ocean, in S. Lat. 23. 30. The province of Janeiro is one of the richest in Brasil; and produces gold, silver, diamonds, and other precious stones.