PLATE 2 
EXPLANATION OF FIGURES 
5 (Microphotograph.) Transverse section of the vagina near. the cervi x 
showing the cornified layers free in the lumen. The animal was killed at 
beginning of stage 2. Notice the few superficial epithelial cells between 
two cornified layers. X 115. - 
6 (Microphotograph.) one tt ieee section of the vagina near the ¢ 
showing the condition of the epithelium immediately after the entire cor 
layer was shed asacast. The epithelium is only four to seven cells high. § 
Saas. Ea 
7 (Microphotograph.) Longitudinal section of the vagina near the 
showing the condition of the epithelium during stage 4 when epithelial 
leucocytes are found in the lumen. The epithelium is about three to: 
high. X 115. - 
