Gullivers Travels by Part 4 Chapter 10 Page 15

ordered the sorrel nag, my fellow-servant (for so, at this distance, I may presume to call him), to follow my instruction; because I told my master, “that his help would be sufficient, and I knew he had a tenderness for me.”

In his company, my first business was to go to that part of the coast where my rebellious crew had ordered me to be set on shore. I got upon a height, and looking on every side into the sea; fancied I saw a small island toward the north-east. I took out my pocket glass, and could then clearly distinguish it above five leagues off, as I computed; but it appeared to the sorrel nag to be only a blue cloud: for as he had no conception of any country beside his own, so he could not be as expert in distinguishing remote objects at sea, as we who so much converse in that element.