Cranial Nerves of Anolis carolinensis. 



PLATE 7. 



Figs. 20 and 21. Transverse sections (Nos. 1435 and 1441) through the 

 posterior part of the middle ear cavity, showing the relation of the chorda 

 tympani to the ligament of the extra-columella {lig. tym.). Fig. 20 shows also 

 foramina for nerve X and the second root of nerve XII. Fig. 21 shows the 

 laxator tympani muscle continuing caudad from the place of insertion of the 

 ligament. 



Fig. 22. Transverse section (No. 1453) through the ganglion of nerve X 

 and the three roots of nerve XII before their union, and immediately anterior 

 to the juncture of Jacobson's anastomosis with the main sympathetic trunk. 



Fig. 23. Transverse section (No. 1480) through the anterior end of the 

 petrosal ganglion. The skeletal attachment of the constrictor of the internal 

 jugular vein is showTi, also the root and distribution, in part, of the first spinal 

 nerve. 



Fig. 24. Transverse section (No. 1595) showing ganglion of the third spinal 

 nerve and the position of the sympathetic trunk and ramus visceralis X on 

 the dorsal side of the thjrmus gland. 



