7, 1889.
[34] J.Turnbull, "_A Voyage Round the World in the Year 1800_," etc., 1813, p.

382.
[35] _Annales d'Hygiene et de Medecine Coloniale_, 1899, p.

494.
[36] Oskar Baumann, "Contraere Sexual-Erscheinungen bei die Neger-Bevoelkerung Zanzibars," _Zeitschrift fuer Ethnologie_, 1899, Heft 6, p.

668.
[37] Rev.J.H.Weeks, _Journal Anthropological Institute_, 1909, p.449.

I am informed by a medical correspondent in the United States that inversion is extremely prevalent among American negroes.