The governor of Toledo sent the Spanish consul at Lisbon a telegram which, translated, read as follows: "I beg you to heartily congratulate Captain Boyton in my behalf for the happy termination of his difficult voyage on the river Tagus, which has once more shown his intelligence and courage." "Before leaving Madrid to begin the journey," remarked Paul to an American friend, "the foreign colony warned me not only of the dangers of the Tagus, but also against the people along the river, who were wild and ignorant, and would kill me.

On the contrary I found them kind, hospitable and generous, both in Spain and Portugal." The Geographical Society of Lisbon requested the navigator to deliver a lecture.

Though the members of the society lived right on the banks of the river, they knew comparatively little about it, and Boyton's lecture was of great scientific importance to them.

Among other things, he told them of the abutments and ancient masonry he had seen while going through some of the wildest canyons, that could not be approached in any way.

This masonry, he thought, must be the remains of ancient Moorish structures which stood there before the great earthquake had shaken up and changed the surface of the country through which the Tagus flows.
An expedition sent out by the Society soon afterward, verified Boyton's words and opinions.
Paul remained in Lisbon during Carnival week, and was entertained until he grew weary of so much pleasure.