e art and science of discovery, 145

Prado De, 297, 298

Prophet bird, or marabout, 230

Ptolemy, chart of, 2;
"Habitable Quarter" of the world, 12

R

Rio Grande, 246;
passed by Gomez, 289

Rubruquis, William de, 92, 93

S

St. George, 254, 255

St. James, 284

St. Michael, island of, discovered, 253

St. Silvia, of Aquitaine, travels of, 33

"Sacred Cape" of the Romans or Sagres, 160

Saewulf of Worcester, 81;
pilgrimage of, 82;
classes of pilgrim-crusaders in time of, 84

Sagres, chosen home of Henry, 160;
systematic study of applied science founded anew at, 162

Santa Maria discovered, 169

Santiago discovered by Gomez, 297

Sanuto, Marino, Venetian map of, 118

Senegal, reached by Cadamosto, 269;
region about the gulf described by him, 273-275

Sinbad Saga, 19

Slate-land or Helluland, 56

Slaves, beginning of trade in, as a part of European commerce, 207;
description of sale of, 214, 215;
treatment of, 215;
excuse for trade in, 216

Strabo, geography of, 5

T

Tagaza, or the Gold-Market, 270

Tangier, siege of, 183

Tarik, the rock of (Gibraltar), 156

Terceira, sighted, 253;
Jacques de Bruges becomes captain, 254

Theodosius, early pilgrim, 34

Thorfinn Karlsefne, greatest of the Vinland sailors, 60

Thorstein, third son of Red Eric, puts to sea, 59

Thorvald Ericson, puts to sea, 57;
voyages of, 58;
death, 59

Timbuctoo, inland route of merchants to, 270

Tristam, Nuno, meets Antam Gonsalvez, 196;
assists in capturing natives, 196-199;
continues voyage and returns to Portugal, 199;
sets out on another voyage, 204;
sails into bay of Arguin, makes captives and returns, 205;
makes a third voyage, 219;
reaches Cape Palmar, 220;
arms a caravel and sets sail, 240;
is killed by Blackmoors, 241

Trygveson, Olaf, 68

V

Vallarte, his expedition and fate, 247

Vaz, Tristam, sets out to explore as far as the coast of Guinea, 163;
is rewarded, 166;
heads three ships from Madeira in Lagos fleet, 229

Vergil, Irish missionary, 40

Vikings, highest type of explorers, 31;
Norse, discoveries, conquests, and colonies, beginning of European
expansion, 50;
voyages of, 52;
struggle with Esquimaux, 58;
rename places visited, 65;
work on south and south-west not one of