This volume collects essays written by Alfred Russel Wallace regarding his independent discovery and development of the theory of natural selection. The author provides corrected and expanded versions of his previous scientific writings to demonstrate the scope and application of his findings.
of Species,” which appeared in the “Quarterly Review,” for April, 1869. I have here ventured to touch on a class of problems which are usually considered to be beyond the boundaries of science, but which, I believe, will one day be