Evolution catapulted into Victorian consciousness via The Principles of Biology. In this informative text, respected philosopher Herbert Spencer writes, “If a single cell, under appropriate conditions, becomes a man in the space of a few years, there can surely be no difficulty in understanding how, under appropriate conditions, a cell may, in the course of untold millions of years, give origin to the human race.” Published in 1864-67, the science book was used at Oxford University.If you like this eBook, you may also enjoy Alfred Russel Wallace's The World of Life.