One of the main differences between skin rashes and hives is the way that they appear on the skin. The raised, red bumps that are hives are eruptions on the surface of the skin. Rashes are a skin discoloration and will only appear slightly raised from the skinâs surface.
Alfred Russel Wallace, codeveloper of the theory of evolution. The image is modified from http://www.prs.k12.nj.us/schools/phs/science_Dept/APBio/Natural_Selection.html. In 1858, Charles Darwin received a letter from Wallace, in which Darwin's as-yet-unpublished theory of evolution and adaptation was precisely detailed.
Last year marked the bicentenary of the birth of Charles Darwin. But this essay is not about Charles Darwin. It is about a contemporary of his, Herbert Spencer, who was developing a theory of evolution before Darwin and is credited with coining the phrase the survival of the fittest.. His books sold in huge numbers during his lifetime and he was almost certainly the most famous philosopher of the Victorian age.