212 DR. F. WOOD-JONES ON THE 
time of examination. In most of the Insectivora there is an 
almost complete anatomical transformation during the brief 
flare up of sexual activity at the pairing season. 
During a very few weeks, parts which were altogether insig- 
nificant have become increased ten times, or more, in size; and 
this is even more obvious in the male than in the female. 
Text-figure 12. 
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Section through the pelvis of a female of the second year (April). 
The epithelial strand has now broken down into the wide open vaginal canal (0.2.c.). 
r., rectum ; gl., land; wr., urethra; gen. tub., genital tubercle. 
The wonderful transformations which take place in the male 
genital glands have been described in detail by histologists. The 
whole of the female genital tract also undergoes these changes 
during the months of March and April, and an enormously 
increased blood supply is furnished to the genitalia during these 
months. 
Examined during the autumn months of its first year, the 
