This is a pretty important chapter in the book. It is in this chapter that we meet John the Savage.
In this chapter, Bernard and Lenina are at the reservation in New Mexico. They are walking around seeing what Indian life is like. Both of them are out of soma so they will have to experience all the strange things without benefit of drugs.
They go and watch a sacrifice. A boy is being whipped until blood comes from his back. The blood is supposed to bring rain and make the corn grow.
After the sacrifice, they see a blond man among the Indians. When they talk to him, they find out that his name is John and that his mother came from "The Other Place." As it turns out, she was from London.