18 Cc. J. HERRICK AND G. E. COGHILL 
lob. vis. 
us 1 Xt 7M Lhy \ 
ie e we VIL km. 
/ / MMi d 
ae ees 
areli \ v Y 
Lila Kueh RO, ify pea «| Soy nam \ rW wy 
KON gle Re eK lly ne . Ve WI Lae 4 
eR be Mater UR ek \rU vs, 
Pol’ ‘- VIIT 9 
Fig. 8 Cross section through the right half at the medulla oblongata near the 
roots of the IX cranial nerve of a 38 mm. larva of Amblystoma tigrinum (from 
Herrick, 714, fig. 14). 
Fig.9 View of a wax model of the medulla oblongata of the same specimen of 
Amblystoma from which figure 8 was taken, seen from the right side. > 42 (from 
Herrick, 714, fig. 3). The entire intra-medullary course of a single typical fiber 
of each sensory component of the cranial nerve roots is shown as projected upon 
the lateral surface. The general cutaneous fibers are shown in dot and dash lines; 
the VIII fibers in heavy broken lines; the visceral sensory fibers in thin continuous 
lines; the lateral line X roots in thin broken lines; the lateral line VII fibers in 
thick continuous lines. 
