ploughman in Ulysses’s sunset-longing simile

“Every one approved of this, and then they went home to bed each in his own abode. When the child of morning, rosy-fingered Dawn, appeared they hurried down to the ship and brought their cauldrons with them. Alcinous went on board and saw everything so securely stowed under the ship’s benches that nothing could break adrift and injure the rowers. Then they went to the house of Alcinous to get dinner, and he sacrificed a bull for them in honour of Jove who is the lord of all. They set the steaks to grill and made an excellent dinner, after which the inspired bard, Demodocus, who was a favourite with every one, sang to them; but Ulysses kept on turning his eyes towards the sun, as though to hasten his setting, for he was longing to be on his way. As one who has been all day ploughing a fallow field with a couple of oxen keeps thinking about his supper and is glad when night comes that he may go and get it, for it is all his legs can do to carry him, even so did Ulysses rejoice when the sun went down, and he at once said to the Phaeacians, addressing himself more particularly to King Alcinous: ”