64 . 
(3) In females progressive narrowing and degeneration of 
the Wolffian ducts set in at about 5*1 ca* stage and continues* 
at a rate varying in different individual** till* at 15.0 crs., the 
ducts ar- intere&ttant ant rior to the vagina* and, at 20.0 cn. 
they are present only in the uterus wall, as solid strips* and as 
sdnute isolatad segaents, in the wall of the anterior half of the 
▼agina* but continuous in the posterior half* and with a lun?n in 
th* posterior one-third of the vagina wall. They have lost all 
connection to the rate of the gonad and to the cranial group of 
meeonsphric tubules. 
In sales these ducts continue to develop and have a lixnsn 
throughout. Ihey say even occupy the whole of the genital cord 
in places shore the yallerian ducts are degenerated conplotely. 
They retain a connection through the cranial group of wosonepfcrlc 
tubulsa with the rote testis, in the epidldysds. 
In froe-aartins the condition of the ducts varies. In one 
case (11.75 era.) they have degenerated in the anterior part as in 
the femle. and have lost all connection through the cranial group 
of mesonephric tubules to the rote. In the other cases studied, 
they ratal this* connection and are r*le in condition, but are 
comparable to stales of younger stages. In ail* they appear to 
hava behaved as ia the f aal® for a considerable ti*;, and to have 
degenerated somewhat, and then been stimulated again. 
(4) Ia females the Wolffian ducts in later stages Join the 
vagina before opening into the sinus, while in males they open 
separately throughout the series as in early stages of both sexes. 
In frve-aertins the condition is variable. fonetines it is as 
in fosales. and at other tinea as in males. This bears a relation 
to the degree of maleness: of the other organs in each individual. 
(5) The sesinal vesicle priaerdia begin to show development 
in the 7.5 o». females, and five, or possibly no re, begin develop- 
sent in the stages studied. But non® reach a else appreciable in 
