In the conversation, Alverstoke expresses curiosity about how balloons were filled historically and how the method has evolved. He admits to not knowing the details, but he is confident that he will learn soon enough. This remark sets the stage for deeper engagement with the topic.
Felix, having obtained an old book on aerostation, takes the opportunity to share his newfound knowledge. He passionately shares insights and keeps the discussion lively with his enthusiastic inquiries, demonstrating his eagerness to explore the history and techniques of balloon filling.