PGA Bey, 
EXPLANATION OF FIGURES 
28-30 Cells of origin of the fibers of the tractus olfactorius ascendens. Golgi 
method. X93. These cells lie in the rostral portion of the precommissural body, 
in the nucleus medianus (see fig. 27). They are taken from a sagittal series and 
show the branching of the dendrites among the cells of the nucleus. The neurites 
terminate in the nucleus olfactorius anterior of the olfactory bulb. 
31 Association cell of the nucleus medianus. Golgi method. 93. From 
sagittal section. 
32-33 Cells of the rostral part of the nucleus olfactorius lateralis. Golgi 
method. X93. The neurite of fig. 32 enters the tractus strio-thalamicus, while 
that of fig. 33 apparently ends in the ventro-lateral portion of the hemisphere. 
The cells are taken from a sagittal series and occupy a position about midway 
between the dorsal and ventral surfaces of the hemisphere. 
34 Transection through the cerebral hemispheres immediately rostral to the 
anterior commissure. Weigert method. X 17. The nervus terminalis is, at this 
level, separated from the tractus olfactorius medialis, preparatory to its decussa- 
tion; the two components of the tractus olfactorius medialis likewise appear dis- 
tinctly. 
com. interbulb., Commissura interbulbaris; f. end., fissura endorhinalis; 7. 
ferm., nervus terminalis; s. ypsil., ant. limb, sulcus ypsiliformis, anterior limb; 
tr. olf. lat., tractus olfactorius lateralis spreading in the form of a crescent to end 
in the nucleus olfactorius lateralis, tr. olf. med., pars lat., tractus olfactorius med- 
ialis, pars lateralis; tr. olf. med., pars med., tractus olfactorius medialis, pars med- 
ialis; ¢r. strio-thal., tractus strio-thalamicus; bundles appearing here are made up, 
mainly, of fibers which do not decussate. 
268 
