Abstract
Theories of hearing so far available cannot elucidate the numerous physical and medical observations regarding the hearing instrument. The main difficulty is presented by the cochlear partition which has been considered as one part, in spite of the fact that it consists of a great number of very precisely built and arranged parts. Therefore, detailed investigations were carried out on the ear of Anoa bubalis, which is very similar to that of man, and it was possible to obtain a clear and complete picture of the organ as a whole and of the function and interaction of its individual parts, and to develop a theory of hearing which explains numerous observations on hearing on a physical basis, and without requiring far-fetched arguments or obscure mechanisms.