CONTROVERTED POINTS; HISTORICAL NOTICES. 189 



and very recently by v. Winiwarter (57). These are apart from the 

 interesting discoveries of Hasse in the cochlea of the Bird and Frog 

 (see p. 182), the only positive statements hitherto made upon the 

 terminations of the radial nerves in the cochlea. Bottcher has re- 

 iterated his opinion, expressed in 1859, that the nerves, after their 

 passage through the habenula perforata, are partly continuous with 

 the cells lying upon the internal series of rods, and partly pass under 

 the arches, and run transversely through to the cell rows of Corti. 

 How far there is here a definitive mode of termination is not, unfor- 

 tunately, distinctly stated in the extracts to which I alone had access, 

 and we must wait for the appearance of the promised more extended 

 work of Bottcher. 



E. Rosenberg described only the mode of termination in the inter- 

 nal hair cells, but upon the whole correctly, and he was the first to 

 give a drawing of these relations. He certainly forgot to mention 

 that his drawing was in great part diagrammatical, for I cannot sup- 

 press a doubt in regard to the existence of any preparation correspond- 

 ing to his fig. 3, PI. ii. Any one who is even moderately familiar 

 with the hair cells, the cells in the sulcus spiralis internus, and the 

 arches of Corti, will readily admit this. 



Middeudorp, on the other hand, only recognizes the internal radial 

 fibres, which he considers enter into connection with the cells of the 

 auditory granule layer, and then terminate by free extremities between 

 the internal hair cells. 



v. Winiwarter, like Rosenberg and Gottstein (74), saw the previously 

 described termination of the external radial fibres in the outer hair 

 cells, but there are no remarks in his provisional communication in 

 regard to the relations of the nerves to the internal hair cells. 



Max Schultze (50) was the discoverer of the spiral fibrous lands 

 of the cochlea, and his statements were soon corroborated by Deiters 

 (13), Kolliker (30), Hensen (27), and Lowenberg (39), by the first 

 two of whom they were described in fullest detail. All these authors 

 agree with Max Schultze (see p. 180) in regarding them as of a 

 nervous nature. No one, however, besides this discoverer has ad- 

 vanced any positive statement in reference to the mode in which these 

 cochlear fibres terminate. According to his rather provisional com- 

 munication (50), the spiral nerve fibres enter into connection with the 

 protoplasmic remains at the base of the internal pillars, and likewise 

 with the cells which are situated at the apices of the arches, pre- 

 sumably also with the external hair cells. Deiters (13), Lowenberg 

 (39), and Kolliker (30), describe, besides the bands which I have 

 also shown to be present, spiral fibres within the arches of Corti. 



