PLATE I. 



Fig. 1. Model of acusticus nucleus, dorso-lateral angle, x 18%- 



Fig. 2. Model of acusticus nucleus, cephalo-ventral angle, x 18-2- 



Fig. 3. Model of acusticus nucleus, mesial surface, x 14i4- 



Fig. 4. Model of acusticus nucleus, dorsal surface. X 18-2- 



Fig. 5. Ascending and descending acusticus fibers in acusticus nucleus. 

 X 41%. 



Fig. 6. Branching acusticus fibers in acusticus nucleus. X 41%. 



