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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    collected statistics in proof of their opinions in a different manner, and while some have considered heredity as only expressing the appearance of a pathological condition in two consecutive generations, others have used the term as expressing the same also when it appears in the collateral branches of a family, while others have considered the appearance also of kindred pathological conditions in the same family as proofs of heredity. The existing facts, with the addition of some new ones, will be collected in the following pages (without reference to any particular theory) in so far as they throw any light upon the frequency with which deaf- mutism appears in the deaf-mute's family, and in a particular branch of the family tree. The appear- ance of various other kindred pathological conditions in the deaf-mute's family will also receive special attention. An endeavour will then be made to arrange the results thus obtained under a general theory as to the heredity of deaf-mutism. Some statistics collected in Denmark, and not yet published, are especially worthy of notice among more recent contributions to the elucidation of our knowledge of the heredity of deaf-mutism. As these statistics will be often referred to in other sections of this work, it may not be out of place to give some account of them here. As explained elsewhere [200, p. 374], all deaf-mutes in Denmark are annually reported to the Minister of Ecclesiastical and Educa- tional Matters, on forms especially printed for that purpose; of these there are two kinds, those for the first reports, and those for the subsequent history. The first form contains a number of questions
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