What is the purpose of the chapter entitled The Mad Tea-party?

Time is one of the story's central themes. The Hatter's watch only shows days,"it's always six o' clock and tea-time". Time is an important part of growing, and the root of the story is about the changes that come with the growing up process. The Hatter's speech and way of speaking in riddles show us how the transition from childhood to adulthood is inescapable. But is it really.... how does time pass for the inhabitants through the looking glass? Think about it!