368 THE BRAIN OF THE TIGER SALAMANDER 



Figure 86A, B, and C— The brains of A. tigrinum and Necturus drawn to approximately 

 the same scale. 



A.— Lateral aspect of the brain of A. tigrinum and its arteries. After Roofe ('35). X 7.5. 

 Drawn after fixation in 10 per cent formalin for six weeks. 



B. — Lateral aspect of the cerebrum of Necturus. This and figure 86C are copied from 1933c, 

 figures 3 and 4. X 8. 



(2 — Median section of the brain of Necturus (compare fig. 2). In the thalamus and midbrain 

 the section is median, and the dotted lines indicate ventricular sulci which mark the boundaries 

 of the chief cellular areas. In the cerebral hemisphere the section is slightly to one side of the 

 mid-plane, and the dotted lines indicate the boundaries of cellular areas with limits marked 

 internally by ventricular sulci. 



olf. bulb 



"^Sfe. 'V, 



ped. 



a 



cb. 



hyp. 



85 



