How Different Races were Formed
We discussed in our last letter the Neolithic men who used to live chiefly in lake dwellings. We saw that they had made great progress in many ways. They discovered agriculture and knew how to cook and to tame animals for their use. All this was many thousands of years ago and we do not know much about them. But probably most of the races of men we have in the world today have descended from these Neolithic people. We find now, as you know, white men and yellow men and brown and black. But as a matter of fact, it is not easy to divide the races of men into these four divisions. Races have got mixed up and it is difficult to say about many of them to which division they belong. Scientists measure the heads of people and by this measurement they can sometimes find out the race. There are other ways of finding this out also. How did these different races come into existence? If they are all descended from the same people, why do they differ so much from each other now? You know that...