Asa Gray was the foremost American botanist of the nineteenth century and a close friend and correspondent of Charles Darwin — one of the most important American scientists to engage seriously with and champion the theory of evolution. This second volume of his collected letters covers significant periods of his career, offering a window into the scientific debates and friendships that shaped Victorian-era natural history in America.
For readers interested in the history of science, the correspondence between Gray and Darwin is alone worth the read. Download this free public-domain EPUB at Better Gutenberg.