says Winsor,1
" was the Catalan Mappermonde of 1375." It was probably the one best
known by the sailors sent out by Prince Henry of Portugal, in the year
1413, to follow down the Atlantic shore line of Africa. On this map,
all known Africa is bounded on the south by a line drawn eastward from
Finisterra, off the mouth of the Rio Del Oro, about 23° north of the
equator, nearly across the continent to the Egyptian Nile. In the
Portolano Laurenziano of 1351, the outline of Africa is given
1 " Narrative and Critical History of America," Vol, I, p. 55, Justin Winsor.
