[79]

Der Einfluss der Blutsverwandschaft der Eltern auf die Kinder, p. 14.

[80]

From 1-1/2 to 2 per cent of all marriages were found to be between cousins within the degree of second cousins, and cousin marriages were found to be normally fertile.

[81]

Marriage of Near Kin, p. 229.

[82]