How does Jack express his anger?

In Chapter Nine, Golding also emphasizes Jack's rise to power and foreshadows the brutal consequences of his authority. Jack rejects the rules established for the island, telling Ralph that the conch yields no authority when Ralph attempts to cite precedent. He signifies his power over his tribe with his painted body and garlands, an image that alludes to Joseph Conrad's 1902 novella, Heart of Darkness, in which a boat captain, Marlow, accepts an assignment to find a defecting government agent, Kurtz, in Africa.