Note 281 — Chapter VII

[“All races of mankind intermix, they are fertile, producing cross-breeds, mulattoes, mestizoes, etc., which again are productive. All human races constitute, therefore, on physiological principles, but one species, which is here identical with genus humanum.” So thinks Professor Rudolph Wagner, but his arguments are not very satisfactory. He refers varieties of race in a great measure to climatic influence. See Creation of Man and Substance of the Mind (Anthrop. Rev., vol. i, p. 229).—Editor.]