The officers were tired enough to turn in. Early the next morning the fires were roaring in the furnaces of the Prince; at a later hour the pipe of the boatswain was heard; and at half-past eight the steamer was standing down the river. As the students had not come to Lisbon from the sea, they all gathered on the deck and in the rigging to see the surroundings.

“That building on the height is the palace of Ajuda, where the present king ordinarily resides,” said the surgeon, when the captain pointed it out to one of the officers. “A temporary wooden house was built on that hill for the royal family after the earthquake. It is very large for this little kingdom, but is only one-third of the size it was intended to be. It was erected by John VI.; or, rather, it was begun by him, for it is not finished.”

“You can see the buildings on the Cintra hills,” added Murray.

“Yes; and you can see them better from the ocean.”

“That is Belem Castle,” said Sheridan, as the ship approached the mouth of the river. “I saw a picture of it in an illustrated paper at home.”

“It is called the Tower of Belem; and there is a palace with the same name on the shore. This is half Gothic and half Moorish. It is round, and the style is unique. What it was built for, no one knows. I suppose you are not aware how Columbus ascertained that there was a Western Continent,” added the doctor, smiling.

“I know what the books say,—that he reasoned it out in his own mind,” replied the captain.

“You see that town on the north: it is Cascaes, in which Sanchez, the renowned pilot, was born,” continued the doctor. “In 1486 Sanchez was blown off in a storm; and, before he could bring up, he was carried to an unknown land somewhere in North America. On his way back he stopped at Madeira, where he was the guest of Columbus. Somehow the log-book of the pilot fell into the hands of the great navigator, and from it he learned that there was an American Continent.”

“Do you believe that story?” asked Sheridan seriously.

“I do not. There are too many difficulties in the way of it; but it was told me by a Portuguese pilot.”