396 



THE PINEAL ORGAN 



Fig. 266. — Pineal Body. 350. 



Median vertical section, through the peduncle, of a human pineal body pre- 

 pared by the Blair-Davis modification of Ranson's pyridin method. The larger, 

 deeply stained fibres forming a network between the pineal cells are probably 

 glial, the finer fibrillar in the centre of the photograph are indistinguishable from 

 nerve-fibres, and possibly represent the axis-cylinders or nerve-fibres reaching 

 the pineal body from the superior and posterior commissures. 



Fig. 267. — Pineal Body. 350. 



Section through the cortical zone of the same specimen as Fig. 266. The 

 larger fibres forming a network surrounding the pineal cells are probably glial. 

 The finer fibres between the cells and surrounding the capillary vessels are pro- 

 bably nerves of the sympathetic system. 



