Deaf-mutism / by Holger Mygind.

  • Mygind Holger, 1855-1928.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: Deaf-mutism / by Holger Mygind. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    were born in the remaining 14 marriages of the same nature where hereditary influence could be proved to exist in one or more relatives, i.e., on an average, 2-14 in each, throws a still stronger light on the importance of consanguinity. The results obtained in Dr. W. Meyer's clinic tend in the same direction [189, p. 38]. Should other statistics confirm the above, there will be reason to suppose that consanguineous marriages, con- tracted between members of a family with defects which are known to be of importance as remote causes of deaf-mutism, are more likely to produce deaf-mute children than others. There are, then, but few facts which serve to elucidate the question whether the influence of con- sanguinity upon deaf-mutism is direct or indirect. Further investigations of the same nature will perhaps throw more light upon this subject. The final solution of the question will, however, in all probability, only be brought about by means of information as to family, supported by an exact knowledge of the rela- tives of the deaf-mutes, and supplemented by their thorough objective examination. It is only thus that it will be possible to find less pronounced, but not on that account less important, abnormalities in the family, and to discover with what frequency the influence of heredity can be with certainty excluded in consan- guineous marriages producing deaf-mute children. OTHER REMOTE CAUSES.—There are, be- sides the above-mentioned, several other remote causes which are, more or less properly, supposed to play a part in the etiology of deaf-mutism ; of these the most important will be mentioned.
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