Besides the census returns, we have the statistics presented in the reports of certain schools, which are 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