80 MORRILL. 
EXPLANATION OF PLATE VII. 
Fic. 1. Transverse section of crista acustica, showing medullated nerves, nerve 
fibers branching in the epithelium and the capillaries at the base of the epithelium. 
Zeiss, oc. 4, obj. A. 
Fic. 2. The auditory epithelium, showing arborization of nerve fibers and re- 
lation of nerve terminations to auditory or hair cells. It also shows the granular 
effect produced on blood corpuscles in the capillaries. A single medullary sheath 
is shown in cross section. Zeiss, oc. 4, obj. D. 
Fic. 3. This section of the auditory epithelium shows arborization of nerve 
fibers, many nerve terminations, and a single hair cell. Medullated nerves and 
capillaries are also shown. Zeiss, oc. 4, obj. D. 
Fic. 4. An unusual branching of nerve fibers'in the auditory epithelium. Two 
nerve terminations are shown near the outer surface. Zeiss, oc. 4, obj. D. 
Fic. 5. <A portion of the crista acustica, showing near its edge nerve fibers and 
a single hair cell; also capillaries and a single medullated nerve. The nerve fiber 
is visible through the sheath. Zeiss, oc. 4, obj. D. 
Fic. 6. A single nerve fiber and its branches. Zeiss, oc. 4, obj. D. 
Fic. 7. This section shows a bundle of nerve fibers as it penetrates the base- 
ment membrane and the fibers separate in the auditory epithelium. A single 
hair cell is shown. Zeiss, oc. 4, obj. D. 
Fic. 8. Method of branching of nerve fibers and relation to hair cells. Tri- 
angular enlargements where nerves branch. Zeiss, oc. 4, obj. D. 
Fic. 9. Two nerves and the relation of their branches to hair-cells. Zeiss, oc. 
4, obj. D. 
Fic. to. A single hair cell and its relation to a nerve fiber. Zeiss, oc. 4, Leitz 
oil im. +45. 
Fic. 11. Two deep-lying cells containing numerous granules, deeply stained, 
and their relation to nerve fibers. Zeiss, oc. 4, Leitz oil im. +. 
