What happens to piggy when he holds up the conch and tries to talk?

I assume you are referring to Chapter 11, when Ralph and Piggy are at Jack's camp in an attempt to get Piggy's glasses back. Jack and Ralph are fighting when Piggy raises up the conch to demand his glasses and that the fighting stop. Roger hits Piggy with a thrown rock, causing Piggy's fall and death.Nov 13, 2007 read more

In chapter 5, during the evening meeting, Piggy holds the conch and Jack starts defying Ralph's leadership and the rules. He argues with Ralph and finally shouts, "Bollocks to the rules!" and leads the boys down onto the beach in a "random scatter," preventing Piggy from saying what he intended to say. read more