found to point, as far as they go,
to the same conclusions. In the Kentucky School, out of 83 pupils
admitted in 1910 and 1911, there were none the children of deaf parents,
though 35, or 30.1 per cent, had deaf relatives; and out of 42 admitted
in 1912 and 1913, there were 2, or 4.8 per cent, the children of deaf
parents, and 12, or 28.8 per cent, with deaf relatives. In the Iowa
School, out of 62 admissions in 1911 and 1912, 4, or 6.5 per cent, had
deaf parents, and 21, or 33.9 per cent, "defective" relatives. In the
Michigan School, with an annual enrollment of some three hundred, there
were from 1903 to 1908 but three children of deaf parents.[50] In the
Colorado School, out of a total attendance since its founding to 1912 of
567, 3, or 0.57 per cent, were the children of deaf parents, though 83,
or 14.6 per cent, had deaf relatives. In the Missouri School, out of a
similar attendance to 1912 of 2,174 there were 52, or 2.4 per cent, with
deaf parents, though there were 235, or 10.8 per cent, with deaf
relatives.[51]

The most exhaustive study of the question of the liability of the deaf
to deaf offspring is that of Dr. E. A. Fay in his "Marriages of the
Deaf"--covering the majority of the marriages of the deaf in America at
the time it was made (1898).[52] Statistical information is presented
for 7,227 deaf persons and for 3,078 marriages with either deaf or
hearing partners.[53] In the following table are summarized the results
of this investigation.[54]

MARRIAGES OF DEAF PERSONS

NUMBER OF NUMBER OF
MARRIAGES CHILDREN
---------------------------------+------+---------+-----+------+----+-----
Partners in Marriage |Total |Resulting|Per |Total |Deaf|Per
| |in deaf |cent | | |cent
| |children | | | |
---------------------------------+------+---------+-----+------+----+-----
One or both deaf | 3,078| 300| 9.7| 6,782| 588| 8.6
| | | | | |
Both deaf | 2,377| 220| 9.2| 5,072| 429| 8.4
One deaf, other hearing | 599| 75| 12.5| 1,532| 151| 9.8
| | | | | |
One or both congenitally deaf | 1,477| 194| 13.1| 3,4