What did Darwin read on the HMS beagle?

During his voyage on the HMS Beagle, Charles Darwin read a variety of works that influenced his thinking, including the writings of prominent scientists like Charles Lyell and Alexander von Humboldt. He also explored books on geology, natural history, and evolution, which helped shape his ideas about natural selection and the diversity of life. Additionally, Darwin kept detailed notes and observations of the flora and fauna he encountered, which were crucial for his later work, including "On the Origin of Species."