HAMAKER. — Nervous Syst. Nereis, 
Fig. 27. 
Fig. 28. 
Fig. 29. 
Fig. 30. 
PLATE 4. 
Diagram to illustrate the fibre systems of sets A, B, and C, in two succes- 
sive ganglia, as projected on the frontal plane. 
A pair of anastomosing fibres of set B. 
Fibres of set C, showing anastomosis between a posterior and a decus- 
sating branch. 
Fibres of set C, showing anastomosis between an anterior and a posterior 
branch. 
