ildren of first cousins reported on my
circulars as either totally or partially deaf, 9 are known to have had
deaf ancestors.]

Dr. Fay found that 31 out of the 4,471 marriages of the deaf were
consanguineous, but he expresses the belief that the actual number
and percentage of consanguineous marriages of the deaf are larger. The
following table which combines several of Dr. Fay's tables sets forth
the main results of his work. In each instance one or both parties to
the marriage were deaf. The totals include only those of whom
information as to the offspring was available.

TABLE XXXIV.
----------------------------------------------------------
| | Marriages |
| | resulting |
| | in deaf |
| | offspring | Deaf children
|Number|-----------|------------------
Consanguineous |of | | | |Per
Marriages |mar- | |Per | |Number|Cent
of the Deaf. |riages|Number|Cent|Number|Deaf |Deaf
----------------------------------------------------------
First cousins | 7 | 4 | 57.| 26 | 7 | 27.
Second cousins | 5 | 3 | 60.| 25 | 10 | 40.
Third cousins | 1 | 1 | -- | 1 | 1 | --
"Cousins" | 14 | 3 | 21.| 36 | 7 | 19.
Nephew and aunt | 1 | 1 | -- | 4 | 3 | 75.
Distantly related | 3 | 2 | 67.| 8 | 2 | 25.
----------------------------------------------------------
Total consanguineous| 31 | 14 | 45.| 100 | 30 | 30.
Not consanguineous, | | | | | |
or no information |3,047 | 286 | 9.|6,682 | 558 | 8.
----------------------------------------------------------
Grand total |3,078 | 300 | 10.|6,782 | 588 | 9.
----------------------------------------------------------

Obviously percentages based on these figures are of little value of
themselves, especially since Dr. Fay's cases are not entirely typical,
but in general this table points us to the same conclusion that we
have reached by other means, namely that where a tendency toward
deafness exists, a consanguineous marriage is more likely to produce
deaf children than a non-consanguineous marriage. If more figures were
available the percentage of deaf children would probably increase with
the nearness of consanguinity and the number of deaf relatives,