Stephen Dedalus spends the early morning hours of June 16, 1904, remaining aloof from his mocking friend, Buck Mulligan, and Buck's English acquaintance, Haines. As Stephen leaves for work, Buck orders him to leave the house key and meet them at the pub at 12:30. Stephen resents Buck.

Around 10:00 A.M., Stephen teaches a history lesson to his class at Garrett Deasy's boys' school. After class, Stephen meets with Deasy to receive his wages. The narrow-minded and prejudiced Deasy lectures Stephen on life. Stephen agrees to take Deasy's editorial letter about cattle disease to acquaintances at the newspaper.

Stephen spends the remainder of his morning walking alone on Sandymount Strand, thinking critically about his younger self and about perception. He composes a poem in his head and writes it down on a scrap torn from Deasy's letter.

At 8:00 A.M. the same morning, Leopold Bloom fixes breakfast and brings his wife her mail and breakfast in bed. One of her letters is from Molly's concert tour manager, Blazes Boylan (Bloom suspects he is also Molly's lover)—Boylan will visit at 4:00 this afternoon. Bloom returns downstairs, reads a letter from their daughter, Milly, then goes to the outhouse.

At 10:00 A.M., Bloom picks up an amorous letter from the post office—he is corresponding with a woman named Martha Clifford under the pseudonym Henry Flower. He reads the tepid letter, ducks briefly into a church, then orders Molly's lotion from the pharmacist. He runs into Bantam Lyons, who mistakenly gets the impression that Bloom is giving him a tip on the horse Throwaway in the afternoon's Gold Cup race.

Around 11:00 A.M., Bloom rides with Simon Dedalus (Stephen's father), Martin Cunningham, and Jack Power to the funeral of Paddy Dignam. The men treat Bloom as somewh...