An American goes to Europe and stays there a long while, and finds his pulse moderating and his temper becoming more calm. The air on this side the ocean is more tonic than on the other side. An American breathes more oxygen than a European. A European coming to America finds a great change taking place in himself. He walks with more rapid strides, and finds his voice becoming keener and shriller. The Englishman who walks in London Strand at the rate of three miles the hour, coming to America and residing for a long while here, walks Broadway at the rate of four miles the hour. Much of the difference between an American and a European, between an Asiatic and an African, is atmospheric. The lack of the warm sunlight pales the Greenlander. The full dash of the sunlight darkens the African. Then, ignorance or intelligence makes its impression on the physical organism--in the one case ignorance flattening the skull, as with the Egyptian; in the other case intelligence building up the great dome of the forehead, as with the German. Then the style of god that the nation worships decides how much it shall be elevated or debased, so that those nations that worship reptiles are themselves only a superior form of reptile, while those nations that worship the natural sun in the heavens are the noblest style of barbaric people. But whatever be the difference of physiognomy, and whatever the difference of temperament, the physiologist tells us that after careful analysis he finds out that the plasma and the disk in the human blood have the same characteristics: so that if you should put twenty men from twenty nationalities abreast in line of battle, and a bullet should fly through the hearts of the twenty men, the blood flowing forth would, through analysis, prove itself to be the same blood in every instance. In other words, the science of the day confirming the truth of my text that "God hath made of one blood all nations of men."