In Chapter 2, Piggy loses his temper during an assembly and screams at the others for not listening to him. He says,
The first thing we out to have made was shelters down there by the beach. It wasn't half cold down there in the night. But the first time Ralph says "fire" you goes howling and screaming up this here mountain. Like a pack of kids!
Piggy goes on to say that the children will never have any hope of being rescued if they "don't put first things first and act proper," and he reprimands the children for not respecting Ralph as a leader. Piggy also says that because of the children's negligence, the entire island almost burned. By the end of the chapter, chaos has overtaken the island: the boy with the birthmark has gone missing (it's presumed that he has been killed in the fire), and the children are screaming in fear of "snakes."