What chapter in The Catcher in the Rye....?

It looks like in Chapter 20 he goes to the park and looks at the pond. Here's a summary: "He leaves the bar and heads in the direction of Central Park, to investigate the lagoon for traces of the ducks. He has a terrifically hard time finding the lagoon, even though he's lived in New York all his life and knows the park like the back of his hand. He drops Phoebe's record on the way, breaking it into a bunch of tiny pieces. The pond is partly frozen, and although Holden does a thorough investigation, nearly falling into the water a few times, there are no ducks to be found. Sitting on a park bench, his wet hair frozen solid, Holden's thoughts turn to death. He hates the idea of his body spending eternity in a cemetery, and he's bothered to think that that's what's happened to his brother Allie. Ultimately, it's the thought of how sad Phoebe would be if he died that gets Holden up and off the park bench."