We are now prepared, in conclusion, to deal with what is perhaps the most interesting phase of our discussion. It is certainly, if true, of profound sociological importance. We have in these pages spoken at length of the head form--primary index of race; we have shown that there are Jews and Jews in this respect. Yet which was the real Jew it was not for us to decide, for the ninety-and-nine were broad-headed, while the Semite in the East is still, as ever, a long-headed member of the Africanoid races. This discouraged our hopes of proving the existence of a Jewish cephalic type as the result of purity of descent. It may indeed be affirmed with certainty that the Jews are by hereditary descent from early times no purer than most of their European neighbors. Then we discovered evidence that in this head form the Jews were often closely akin to the people among whom they lived. In long-headed Africa they were dolichocephalic. In brachycephalic Piedmont, though supposedly of Sephardim descent, they were quite like the Italians of Turin. And all over Slavic Europe no distinction in head form between Jew and Christian existed. In the Caucasus also they approximate closely the cranial characteristics of their neighbors. Hypnotic suggestion was not needed to find a connection here, especially since all history bore us out in our assumption of a large degree of intermixture of Gentile blood. Close upon this disproval of purity of type by descent came evidence of a distinct uniformity of facial type. Even so impartial an observer as Weissenberg--certainly not prejudiced in favor of cephalic invariability--confesses this featural unity.