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5 and under 10 10.5 10 and under 15 4.0 15 and under 20 2.4 Under 20 90.6 20 and under 40 5.7 40 and under 60 2.4 60 and under 80 1.1 80 and over 0.2

      Ability of the Deaf to Speak

      Means of Communication Employed by the Deaf

      FOOTNOTES:

       Table of Contents

      [1] There are no sharply dividing lines between the different degrees of deafness, but it is only those described that really constitute a special class. Persons whose hearing is such as to be of use even in some slight degree are rather to be distinguished as "hard of hearing."

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