After the vessels were refitted, Cortéz coasted the shores of Yucatan until he reached the Rio de Tabasco or Grijalva, where he encountered the first serious opposition to the Spanish arms. He had a severe conflict, in the vicinity of his landing, with a large force of the natives; but the valor of his men, the terror inspired by fire arms, and the singular spectacle presented to the astonished Indians by the extraordinary appearance of cavalry, soon turned the tide of victory in his favor. The subdued tribes appeased his anger by valuable gifts, and forthwith established friendly relations with their dreaded conqueror. Among the presents offered upon this occasion by the vanquished, were twenty female slaves;--and after one of the holy fathers had attempted, as usual, to impress the truths of christianity upon the natives, and had closed the ceremonies of the day by a pompous procession, with all the impressive ceremonial of the Roman church, the fleet again sailed towards the empire Cortéz was destined to penetrate and subdue. * * * * * In Passion week, of the year 1519, the squadron dropped anchor under the lee of the Island or reef of St. Juan de Ulua. The natives immediately boarded the vessel of the Captain General; but their language was altogether different from that of the Mayan dialects spoken in Yucatan and its immediate dependencies. In this emergency Cortéz learned that, among the twenty female slaves who had been recently presented him, there was one who knew the Mexican language, and, in fact, that she was an Aztec by birth. This was the celebrated MARINA or MARIANA, who accompanied the conqueror throughout his subsequent adventures, and was so useful as a sagacious friend and discreet interpreter. Acquainted with the languages of her native land and of the Yucatecos, she found it easy to translate the idiom of the Aztecs into the Mayan dialect which Aguilar, the Spaniard, had learned during his captivity. Through this medium, Cortéz was apprised that these Mexicans or Aztecs were the subjects of a powerful sovereign who ruled an empire bounded by two seas, and that his name was MONTEZUMA. * * * * *