"It is a misfortune that in England and America the naturalists should at the moment have gotten into an absolutely fossilized condition of mind about such things as protective coloration. Both the English and the American scientific periodicals are under the control of men like Professor Poulton and others who treat certain zoological dogmas from a purely fetichistic standpoint, exactly as if they were mediaeval theologians. This is especially true of their attitude toward the doctrine of natural selection, and incidentally toward protective coloration. There is much in natural selection; there is much in protective coloration. But neither can be used to one-twentieth the extent that the neo-Darwinians, such as Mr. Wallace and the rest, have used them; indeed these neo-Darwinians have actually confused the doctrine of natural selection with the doctrine of evolution itself. "Heller is coming home soon. He has just written me from Berlin, where he saw our friend Matzchie who, you doubtless remember, has split up the African buffalo into some twenty different species, based on different curves of the horns. Matzchie told Heller that he had read my statement that of the four bulls I shot feeding together near the Nairobi Falls, the horns, according to Matzchie's theory, showed that there were at least two and perhaps three different species (among these four bulls from the same herd). Well, Matzchie absolutely announces that doubtless there were two species among them, because the locality is on the border-line between two distinct types of buffalo, that of Kenia and that of the Athi! I think this is one of the most delightful examples of the mania for species-splitting that I have ever seen. On the same basis Matzchie might just as well divide the African buffalo into a hundred species as into twenty; and as for the elephant he could make a new species for every hundred square miles.