I N D E X. 



pag. 



INTRODUCTION 3 



CHAPTER 1. THE REMOVAL OF THE RABBIT-LABYRINTH. THE SECTION 



OF THE N. OCTAVUS AND OF ITS PROLONGATIONS IN THE CENTRAL 



NERVE-SYSTEM. 

 THE DISTURBANCES OF MOTION FOLLOWING ON THESE OPERATIONS. 



1. A few technical remarks on the removal of the labyrinth 



in rabbits 



2. The operations through the bidla ossea 9 



a. the removal of the cochlea . , 13 



b. the removal of the entire labyrinth 15 



c. the sectioning- of the corp. trapezoides 17 



d. the section of the dorsal octa vug-tract 17 



2. The acute motor troubles arising after one-sided removal 



of the labyrinth 19 



3. Permanent disturbances of motion after the one-sided 

 removal of the labyrinth 29 



4. The disturbances in motion in rabbits after the extirpation 



of the labyrinth on both sides .'. . 34 



5. The results of destruction of the cochlea 36 



5. The effects of the section of the dorsal secundary tracts 



of the N. octavus 37 



6. A comparison between pigeons after one-sided removal of 



the labyrinth and rabbits after the same operation 39 



7. Conclusions concerning the disturbances of motion found 

 after extirpation of the labyrinth 42 



