CRANIAL NERVES OF SIREN LACERTINA Be 
Dye EST PEG 
Osph. pa. op. 2, 
‘ 
(ie ee 
. oars 
md. 5 mt. int. 
-) 6 
Fig. 4 A cross-section of the head through the external nostril. Section 70. 
X20. 
Fig. 5 A cross-section of the nasal region through Jacobson’s organ. Section 
115. X20. 
Fig. 6 A cross-section of the nasal region through the internal nares, and exit 
of the olfactory nerve. Section 140. 20. . 
