Brown, Anastomosis of Netve Cells. 357 



(5) Clear in oil of origanum, rinse in xylol, and mount 

 under cover-glass in daniar balsam. 



In our experience the tissues of the frog differentiated 

 much more rapidly than did those of the mouse and cat. The 

 frog tissues were also impregnated with the stain in less time 

 than were the others. 



Granville, Ohio, June i^, igoo. 



DESCRIPTION OF FIGURES. 

 PLATE XXIII. 



Fig. I. Pimephales notatus. Cells in the nucleus of the VI nerve, 

 medulla oblongata. Cells are situated on the opposite sides of a bundle of 

 nerve fibers. X 1800. 



Fig. 2. Pimephales notatus. Cells of the tuberculum acusticum, under 

 the cerebellar crest, just laterally of the communis root of the VII nerve at the 

 point where it begins to turn outward towards its superficial origin. They are 

 therefore probably cells of the sensory terminal nucleus of the acustico-lateral 

 system of nerves. X 800. 



Fig. J. Pimephales notatus. Small cells in the lateral part of the 

 medulla oblongata at the level of the exit of the V root and lying immediately 

 ventrally of the motor nucleus of the V nerve. X 2500. 



Fig. ^. Cat. Between the dorsal and ventral horns, in the region of 

 transition between the first segment in the spinal cord and the medulla. 



Fig 5. Cat. Cells in the first segment of the spinal cord between the 

 dorsal and ventral horns. Exhibits a.t A a. line of demarcation between two 

 cells which seem otherwise in intimate union. 



Fig. 6. Cat. Golgi preparation. Cells in the cerebral cortex, near the 

 lateral fissure. 



