What are examples of personification in Lord of the Flies?

When the boys first landed on the island, they still retained much of their civil ways. There was order, and a set schedule. As the story progresses, you can see especially in Jack and Roger how their human side decays. For example, Jack no longer cares about anything other than killing pigs, and Roger becomes more and more evil. I don't want to spoil anything, but if you have read the book, I'm pretty sure you can filling in the rest.