536 . DAVIDSON BLACK 
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Fig. 38 Ameiurus nebulosus. Transverse section of brain stem on the level 
of the trochlear nuclei and roots. 
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Fig. 39 Ameiurus nebulosus. Transverse section of brain stem on the 
level of the oculomotor nuclei and roots. Abbreviations: Dec.dors., decussating 
fibers of fasciculus longitudinalis medialis; Dec.vent., commissura ansulata; 
Ginter pedunc., ganglion interpedunculare; Lob.inf., lobus inferior; Nu. III. dors., 
dorsal moiety of oculomotor nucleus. Other abbreviations as before. 
