. Memoir upon the formation of a deaf variety of the human race [microform]. Genetics; Heredity, Human; Human genetics; Génétique; Hérédité humaine; Génétique humaine. 5: ;\ Chafteb IV. FAMILIES OF DEAF-MUTES. The reports of the American Asylum, Ifuw York, Oliio, Iiuliann, and Illinois Institutions show that in each institution deaf-mutes have been received who belong to families containing five, six, or even more deaf-mutes ; and there is abundance of evidence to indicate that such fam- ilies are very numerous in the United States, In cases where there are five or six children of one family d
. Memoir upon the formation of a deaf variety of the human race [microform]. Genetics; Heredity, Human; Human genetics; Génétique; Hérédité humaine; Génétique humaine. 5: ;\ Chafteb IV. FAMILIES OF DEAF-MUTES. The reports of the American Asylum, Ifuw York, Oliio, Iiuliann, and Illinois Institutions show that in each institution deaf-mutes have been received who belong to families containing five, six, or even more deaf-mutes ; and there is abundance of evidence to indicate that such fam- ilies are very numerous in the United States, In cases where there are five or six children of one family deaf and dumb some of them marry when they grow up, and in many cases they marry persons who belong, like themselves, to families cofitaining several deaf-mutes. Thus it happens that we have here and there, scattered over the country, groups of deaf-mute families connected together by blood and marriage. The probability is very strong that the deaf mute children of deaf-mute marriages will at some time or other make their appearance in the educational institutions of the country, and we might reasonably hope to be able to trace the family relations from the published reports of the institutions. Unfortunately, in the nuijority of cases, the information that can be gleaned in this way is very fragmentary and uncertain, for the names of the husbands and wives of the pupils are rarely quoted, so that it is impossible in the greut majority of cases to trace the connections. A female deaf-mute, when she marries, changes her name to that of her husband; the new name is not recorded iu the iustitutiou reports, and we lose track of her branch of the family. Should she have deaf ofl'spiing they make their appearance in the institution under another family name, and the connection is not obvious. So far as mj-researches have gone they indicate the probabdity of a connection by blood or marriage between many of the largest of the deaf mute families of the New England States. In the
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