The author sets out as captain of a ship. His men conspire against him, confine him a long time to his cabin, and set him on shore in an unknown land. He travels up into the country. The Yahoos, a strange sort of animal, described. The author meets two Houyhnhnms.

I continued at home with my wife and children about five months, in a very happy condition, if I could have learned the lesson of knowing when I was well. I left my poor wife big with child, and accepted an advantageous offer made me to be captain of the Adventurer, a stout merchantman of 350 tons: for I understood navigation well, and being grown weary of a surgeon’s employment at sea, which, however, I could exercise upon occasion, I took a skilful young man of that calling, one Robert Purefoy, into my ship. We set sail from Portsmouth upon the 7th day of September, 1710; on the 14th we met with Captain Pocock, of Bristol, at Teneriffe, who was going to the bay of Campechy to cut logwood. On the 16th, he was parted from us by a storm; I heard since my return, that his ship foundered, and none escaped but one cabin boy. He was an honest man, and a good sailor, but a little too positive in his own opinions, which was the cause of his destruction, as it has been with several others; for if he had followed my advice, he might have been safe at home with his family at this time, as well as myself.