Upon arriving at the boarding house, Jurgis hears Ona screaming. She is in
premature labor, and Marija explains that the family had no money for a doctor. Jurgis convinces a
midwife to assist, but it is too little too late; the infant is dead, and with one last look at Jurgis, Ona dies shortly afterward. The children return with a day's wages; Jurgis spends all of it to get drunk for the night.
The next morning, Ona's stepmother begs Jurgis to think of his surviving child. With his son in mind, he endeavors again to gain employment despite his blacklisting. For a time, the family gets by and Jurgis delights in his son's first attempts at speech. One day, Jurgis arrives home to discover that his son had drowned after falling off a rotting boardwalk into the muddy streets. Without shedding a tear, he walks away from Chicago.
Jurgis wanders the countryside while the weather is warm, working, foraging, and stealing for food, shelter, and drink. In the fall, he returns to Chicago, sometimes employed, sometimes a
tramp. While begging, he chances upon an eccentric rich drunk—the son of the owner of the first factory where Jurgis had worked—who entertains him for the night in his luxurious mansion and gives him a
one-hundred-dollar bill (worth about $3000 today). Afterward, when Jurgis spends the bill at a bar, the
bartender cheats him. Jurgis attacks the bartender and is sentenced to prison again, where he once again meets Jack Duane. This time, without a family to anchor him, Jurgis decides to fall in with him.
Jurgis helps Duane mug a well-off man; his split of the loot is worth over twenty times a day's wages from his first job. Though his conscience is pricked by learning of the man's injuries in the next day's papers, he justifies it to himself as necessary in a "dog-eat-dog" world. Jurgis then navigates the world of crime; he learns that this includes a substantial corruption of the police department. He becomes a vote fixer for a wealthy political powerhouse, Mike Scully, and arranges for many new
Slavic immigrants to vote according to Scully's wishes—as Jurgis once had. To influence those men, he had taken a job at a factory, which he continues as a
strikebreaker. One night, by chance, he runs into Connor, whom he attacks again. Afterward, he discovers that his buddies cannot fix the trial as Connor is an important figure under Scully. With the help of a friend, he posts and skips
bail.
With no other options, Jurgis returns to begging and chances upon a woman who had been a guest to his wedding. She tells him where to find Marija, and Jurgis heads to the address to find that it is a
brothel being raided by the police. Marija tells him that she was forced to prostitute herself to feed the children after they had gotten sick, and Stanislovas—who had drunk too much and passed out at work—had been eaten by rats. After their speedy trial and release, Marija tells Jurgis that she cannot leave the brothel as she cannot save money and has become addicted to
heroin, as is typical in the brothel's
human trafficking.
Marija has a customer, so Jurgis leaves and finds a political meeting for a warm place to stay. He begins to nod off. A refined lady gently rouses him, saying, "If you would try to listen, comrade, perhaps you would be interested." Startled by her kindness and fascinated by her passion, he listens to the thundering speaker. Enraptured by his speech, Jurgis seeks out the orator afterward. The orator asks if he is interested in
socialism.
A Polish socialist takes him into his home, conversing with him about his life and socialism. Jurgis returns home to Ona's stepmother and passionately converts her to socialism; she placatingly goes along with it only because it seems to motivate him to find work. He finds work in a small hotel that turns out to be run by a state organizer of the Socialist Party. Jurgis passionately dedicates his life to the cause of socialism.