[Footnote 7: "Du Croisement des families," _Mem. de la Société d'Anthropologie_, vol. i, 1860-63, pp. 505-557.] [Footnote 8: See Morris: "On Marriages of Consanguinity," in _Amer. Med. Times_, Mar. 23, 1861.] [Footnote 9: See _Bulletins de la Société d'Anthropologie_, 1863, pp. 515-575; 1877, pp. 203-213.] In England similar discussions took place during the same period, complicated, however, by the presence of the patient and long-suffering "deceased wife's sister." The best of the English work has been the statistical study by George H. Darwin,[10] and the classic "Marriage of Near Kin" by Alfred H. Huth, a book of 475 pages, including a very complete bibliography to the date of the second edition, 1885. Although Mr. Huth's book is not free from error, and is encumbered with a large amount of worthless material, it is now after thirty-three years, by far the best treatment of the subject. [Footnote 10: "Marriages of First Cousins in England and their Effects," _Journal Statistical Society_, 1875, pp. 153-184.] In Italy Dr. Montegazza,[11] in Spain Señor Pastor[12] and others, have made useful contributions. German writers have usually preferred more general subjects, but many of them have given much space to consanguineous marriage in sociological and biological works. [Footnote 11: _Studj Sui Matrimonj Consanguinei_. Quoted by Darwin, op. cit., p. 178.] [Footnote 12: "De los Matrimonios entre Parientes," Memorias _de la Real Academia de Ciencias Morales y Políticas_, vol. ii, pp. 369-400.]