IV. For Chapter IV. (Maritime Exploration): (1) The Marino Sanuto Map of
1306; (2) the Laurentian Portolano of 1351; (3) The Catalan Map of
1375-6; (4) scattered notices collected in early chapters of R.H.
Major's _Prince Henry the Navigator_; (5) Béthencourt's _Conquest of the
Canaries_ (Hakluyt Society, ed., Major); (6) Wappäus' _Heinrich der
Seefahrer_, part 2.

V. For Chapter V. (Geographical Science): (1) Neckam's _De Naturis
Rerum_; (2) the seven chief Mappe-Mondes of the fourteenth and early
fifteenth centuries; (3) the leading Portolani; (4) scattered notices,
_e.g._, from Guyot de Provins' "Bible," Brunetto Latini, Beccadelli of
Palermo, collected in early chapters of Major's _Henry the Navigator_;
(5) Wauwerman's _Henri le Navigateur_.

VI. For Chapter VI. (Portugal to 1400): (1) _The Chronicle of Don John
I._; (2) Oliveiro Martins' _Sons of Don John I._; (3) A. Herculano's
_History of Portugal_; (4) Osbernus de Expugnatione Lixbonensi.

VII. For Chapter VII. (Henry's position in 1415): Azurara's _Discovery
and Conquest of Guinea_.

VIII. For Chapter VIII. (Ceuta): (1) Azurara's _Chronicle of the
Conquest of Ceuta_; (2) Azurara's _Discovery of Guinea_.

IX. For Chapter IX. (Henry's Settlement at Sagres): (1) Azurara's
_Guinea_; (2) De Barro's _Asia_; (3) Wauwerman's _Henri le Navigateur et
l'École Portugaise de Sagres_.

X. For Chapter X. (Cape Bojador and the Azores): (1) Azurara's _Guinea_;