Charles Darwin 
The Voyage of the Beagle [EPUB ebook] 

The Voyage of the Beagle chronicles Charles Darwin's five-year journey around the world and especially the coastal waters of South America as a naturalist on the H.M.S. Beagle. While traveling through these unexplored countries collecting specimens, Darwin began to formulate the theories of evolution and natural selection realized in his masterwork, The Origin of Species. Travel memoir and scientific primer alike, The Voyage of the Beagle is a lively and accessible introduction to the mind of one of history's most influential thinkers.