It was reserved, however, to Charles Darwin, in 1859, and seconded by A. R. Wallace, who died recently, to convert the majority of the scientific world to the popular evolutional views. These men separately announced the hypothesis of (to use Darwin’s own words) “the origin of species by spontaneous variations, and the survival of the fittest through natural selection, in the struggle for existence.” At first scientists with some hesitancy adopted these views, but later they were so generally accepted