[Footnote 165: See the section of this Introduction on "Maps and Scientific Geography;" also Wappäus, _Heinrich der Seefahrer_, pp. 174-5.] Nothing, so far as we know, was done for the further exploration of the Canaries (after 1341) till 1382, when one Captain Francisco Lopez, while on his way from Seville to Galicia, was driven south by storms, and took refuge (June 5th) at the mouth of the Guiniguada, in Grand Canary. Here he landed with twelve of his comrades; the strangers were kindly treated, and passed seven years among the natives, instructing many in the doctrines of Christianity. Suddenly Lopez and his men were accused of sending into Christian countries a "bad account" of the islands, and were all massacred. Before dying, they seem to have given one of their converts a written "testament," and this was found by the men of Jean de Béthencourt in 1402. Apparently, very shortly before the invasion of the latter (? in 1390-5), another Spaniard, Alvaro Becarra, visited the islands,[166] and it was (according to one authority) from information directly supplied by him and two French adventurers who accompanied him, that De Béthencourt was induced to undertake his expedition. [Footnote 166: Ayala, _Chronicle of Henry III of Castille_, asserts that in 1393, mariners of Biscay, Guipuzcoa, and Seville, visited the Canaries, and brought back spoils. Teneriffe they called the Isle of Hell (Inferno), from its volcano. They also landed on other islands of the group which they called Lencastre, Graciosa, Forteventura, Palma, and Ferro. See also Martins, _Os Filhos de D. João I_, p. 68.] The Lord of Grainville set out with a body of followers, among whom the knight Gadifer de la Salle was chief, from Rochelle, on May 1st, 1402. Eight days' sail from Cadiz, he reached Graciosa. Thence he went to Lançarote, where he built a fort called Rubicon. Going on to Fuerteventura, he was hampered by a mutiny among his men, and by lack of supplies. He returned to Spain, procured from Henry III of Castille what he needed, and reappeared at Lançarote. During his absence, Gadifer, left in command, accomplished a partial exploration of Fuerteventura, Grand Canary, Ferro, Gomera and Palma. The "King" of Lançarote was baptised on February 20th, 1404; but after this, Gadifer quarrelled with his leader and returned to France. All attempts to conquer the Pagans of Grand Canary were fruitless, and De Béthencourt finally quitted the islands, appointing his nephew Maciot[167] to be governor in his place of the four Christian colonies in Palma and Ferro, Lançarote and Fuerteventura. [Footnote 167: See Azurara, _Guinea_, c. xcv, lxxix, etc.]