To prevent any possible misconception of my meaning, a further word of explanation may be needed at this point. The word "race" is used in such widely different senses that there is apt to be more or less vagueness about it. The difference is mainly in what logicians call extension; sometimes the word covers very little ground, sometimes a great deal. We say that the people of England, of the United States, and of New South Wales belong to one and the same race; and we say that an Englishman, a Frenchman, and a Greek belong to three different races. There is a sense in which both these statements are true. But there is also a sense in which we may say that the Englishman, the Frenchman, and the Greek belong to one and the same race; and that is when we are contrasting them as white men with black men or yellow men. Now we may correctly say that a Shawnee, an Ojibwa, and a Kickapoo belong to one and the same Algonquin race; that a Mohawk and a Tuscarora belong to one and the same Iroquois race; but that an Algonquin differs from an Iroquois somewhat as an Englishman differs from a Frenchman. No doubt we may fairly say that the Mexicans encountered by Cortes differed in race from the Iroquois encountered by Champlain, as much as an Englishman differs from an Albanian or a Montenegrin. But when we are contrasting aboriginal Americans with white men or yellow men, it is right to say that Mexicans and Iroquois belong to the same great red race. In some parts of the world two strongly contrasted races have become mingled together, or have existed side by side for centuries without intermingling. In Europe the big blonde Aryan-speaking race has mixed with the small brunette Iberian race, producing the endless varieties in stature and complexion which may be seen in any drawing-room in London or New York. In Africa south of Sahara, on the other hand, we find, interspersed among negro tribes but kept perfectly distinct, that primitive dwarfish race with yellow skin and tufted hair to which belong the Hottentots and Bushmen, the Wambatti lately discovered by Mr. Stanley, and other tribes.[20] Now in America south of Hudson's Bay the case seems to have been quite otherwise, and more as it would have been in Europe if there had been only Aryans, or in Africa if there had been only blacks.[21] [Footnote 20: See Werner, "The African Pygmies," _Popular Science Monthly_, September, 1890,--a thoughtful and interesting article.]