-------------------------------------------------------
1st cousins or nearer[A]| 660 | 3363 | 5.0
More distantly related | 119 | 572 | 4.8
Non-consanguineous | 125 | 837 | 6.7
Ohio consanguineous | 155 | 1021 | 6.6
Ohio non-consanguineous | 200 | 1375 | 6.9
-------------------------------------------------------
[A] Includes double-cousins and uncle-niece marriages.

[Footnote 47: Appointed to ascertain the number of the deaf and dumb,
blind, idiotic and insane within the State.]

[Footnote 48: See Bemiss, in _Trans. of Am. Med. Asso._, vol. xi,
1858, pp. 420-425.]

The comparatively low averages of the consanguineous marriages from
Bemiss may easily be accounted for by the fact that the cases were
highly selected so that nearly one-third of the children were in some
way defective, and the parents in many cases were far below the
average in vitality. The "more distantly related" are in a still
lesser degree representative of the class, since out of a greater
possibility of choice a smaller number were chosen. The
"non-consanguineous" were supposed to be near the average in vitality
and fertility.

In Norway, according to Uchermann, the consanguineous and the
non-consanguineous marriages are equally fertile, averaging 6.1
children per marriage;[49] and in a Black Forest village Tenckhoff
found an average of 4.6 children to each consanguineous marriage as
against 3.5 to each non-consanguineous marriage.[50] In regard to the