LitCharts assigns a color and icon to each theme in NW, which you can use to track the themes throughout the work.
Class Identity and Social Mobility
Geography and Human Connection
Sex and Relationships
Altruism
Summary
Analysis
Two people argue about Hamstead Heath. One thinks everyone should appreciate nature, but the other continues to have no interest in Hamstead.
Hamstead Heath is a large public park. Parks are often a place in cities that force people from all different social classes to interact with one another.