As to the 1,150,000,000 of the colored world, they are divided, as already stated, into four primary categories: yellows, browns, blacks, and reds. The yellows are the most numerous of the colored races, numbering over 500,000,000. Their habitat is eastern Asia. Nearly as numerous and much more wide-spread than the yellows are the browns, numbering some 450,000,000. The browns spread in a broad belt from the Pacific Ocean westward across southern Asia and northern Africa to the Atlantic Ocean. The blacks total about 150,000,000. Their centre is Africa south of the Sahara Desert, but besides the African continent there are vestigial black traces across southern Asia to the Pacific and also strong black outposts in the Americas. Least numerous of the colored race-stocks are the reds--the "Indians" of the western hemisphere. Mustering a total of less than 40,000,000, the reds are almost all located south of the Rio Grande in "Latin America." Such is the ethnic make-up of that world of color which, as already seen, outnumbers the white world two to one. That is a formidable ratio, and its significance is heightened by the fact that this ratio seems destined to shift still further in favor of color. There can be no doubt that at present the colored races are increasing very much faster than the white. Treating the primary race-stocks as units, it would appear that whites tend to double in eighty years, yellows and browns in sixty years, blacks in forty years. The whites are thus the slowest breeders, and they will undoubtedly become slower still, since section after section of the white race is revealing that lowered birth-rate which in France has reached the extreme of a stationary population.