Comparison between the methods prevailing in science and in politics began as early as the presidential campaign of 1872. Already there was a distinctly recognized scientific world which was demanding recognition in colleges and universities. The terms scientific spirit and scientific method were becoming clearly defined. The men who were at the time responsible for the conduct of public affairs were in a better position to appreciate the change involved than any after generation can be. To those abreast with the times, Darwin's Origin of Species came as a great revelation. They themselves actually experienced the transition from dogmatism and authority to experiment and demonstration. For the first time in history men had planted their feet firmly upon the solid earth; and they refused to be moved. Scientific devotees became informally pledged to each other to use their utmost endeavor to know all that man may know in the realm of nature, regardless of any moral, religious or extraneous influence of any sort. In this limited field they made truth, or actuality, their single goal. All liars, all blunderers, and all who had a disposition to believe a false report, disappeared from the ranks of the promoters of science.