Fig. 7.

Same bone with section removed. Facial canal, with cord representing nerve, exposed in three places. Showing relation of horizontal semicircular canal and bend of facial canal to antrum.

Fig. 9. Temporal bone-showing line of section.

10

Fig. 10.

Side view of Fig. 9, anterior segment. Cord representing facial Horizontal semicircular canal and bend of facial canal exposed-showing their relation to antrum.

nerve.