youthful death-rate among the offspring of consanguineous marriages,
comparison with non-related marriages is more feasible. I have counted
in each case all those children who are known to have died under the
age of twenty. This age was taken for the sake of convenience, and to
include all children indefinitely specified as having "died young."
The results are given in Table XIX:

TABLE XIX.
-------------------------------------------------
Parentage. | No. of |No. dying |
(Genealogies.) |Children.|under 20. |Per cent.
-------------------------------------------------
First cousins | 672 | 113 | 16.7
Other cousins | 1417 | 211 | 14.9
Ch. of 1st cousins| 825 | 103 | 12.5
Non-consanguineous| 3184 | 370 | 11.6
-------------------------------------------------
(Correspondence.)
-------------------------------------------------
First cousins | 759 | 88 | 11.6
Other marriages | 829 | 71 | 8.6
-------------------------------------------------

[Footnote 49: Feer, _Der Einfluss der Blutsverwandschaft der Eltern
auf die Kinder,_ p. 12, _note_.]

[Footnote 50: Ibid.]

If the figures in Table XIX are to be accepted at their face value,
and there seems to be no good reason for not doing so in the