S77.cz. 



Fbn 



Fig. 12 Longitudinal section through one group of 'hair-cells' showing the 

 extensive branching of fibrillae from one nerve filler. Mustelus canis adult. 

 (Pyridine silver and Delafield's haem.) X 060. 



Fig. 13 Oblique section of the lateral sensory column, showing the lateral 

 ramulus and several varicosities on the terminal fibrillae. Mustelus canis adult. 

 (Silver-pyridine tech.). X 555. 



Figs. 14, 15 Transverse sections of lateral ramuli, showing variation in the 

 number of fibers as well as in the size of the individual fibers. Mustelus canis 

 adult. Figure 15 represents a silver-pj'ridine preparation; figure 16, a Dela- 

 field haematoxylin preparation. X 555. 



28 



