Fig. 5 Cross section of the same embryo, through the otic.region, showing, on 

 the left side, the chorda tj-mpani (c.t.) passing from the n. facialis laterally on the 

 dorsal side of the columella auris. The processus interhyalis (pr.i.) of the extra- 

 columella is also seen. X 15. 



Fig. 6 Cross section of the same embryo through the anterior part of the otic 

 capsule showing, on the right side, the foramen facialis (/./.), and on the left side 

 the fovea geniculi (f.g.) and the ramus palatinus n. facialis leaving the ganglion 

 geniculi. The chorda t5Tnpani (c.t.) is lying in a groove on the lateral surface of 

 the goniale. X 15. 



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