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C. JUDSON HERRICK 



Fig. 48 A horizontal section through the eminentia thalami, nucleus of pars 

 optica thalami, and pars ventralis thalami. The right side is slightly farther 

 ventral. The fibers of the commissura hippocampi (com. hip.) are converging 

 from the various parts of the primodium hippocampi to descend to their cross- 

 ing. Dendrites from the eminentia thalami (em.th.) are directed forward among 

 these fibers and also lateralh^ to engage the tractus cortico-thalamicus (tr.c.ih.) 

 and stria medullaris {."^tr.med.). Dendrites of the nucleus of the pars optica 

 thalami (nur.p.o.th.) are directed laterally into the ventral part of the pars 

 optica thalami (p.o.th.). Axons from both of these classes of neurons are di- 

 rected backward into the tractus thalamo-peduncularis (tr.th.p.i.). The tract 

 so designated in this and the next following figure contains, accordingly, fibers 

 of both the dorsal and ventral thalamo-peduncular tracts. X 30 (civc, 1-2-9). 



