Baron Humboldt, the great German scholar, has advanced an unanswerable argument to prove the unity of the human race and their descent from one pair. In his "Cosmos" he says: "The different races of men are forms of one sole species. They are not different species of a genus, since in that case their hybrid descendants would be unfruitful. But it is known that people of every race and color, from the highest to the lowest, intermingle and propagate descendants different from either parent." Three swift flicks of his own flash showed to Jeff. 日本一大免费高清_日本最新免费一区_日本不卡高清免av 鈥淚f it鈥檚 genuine, Mr. Levy, it might easily form the basis of a more serious sort of case.鈥?