Abstract
IN PART II we presented a theory of hearing based on a series of anatomical and physiological facts mutually explaining each other. We will now try to continue along this same road. In the experiments of von Bekesy 4 (part II, Fig 18) every detail apparently fitted perfectly with our independently achieved theoretical deductions, except the appearance of vertical waves situated between the radial and the longitudinal; the latter are nearest to the apex and must be regarded as the decisive stimulation. The vertical waves may be interpreted as the results of the up and down moving vibrations of the basilar membrane described and depicted by von Bekesy 4 (part I, Fig 1). By sufficient intensity they may give rise, we suppose, to lesions of the organ of Corti demonstrating themselves as well-known injuring deafness situated about one-half octave above the injuring frequency (Davis, 9,10 Ruedi and Furrer 40 [Fig
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