1222 
the os pubis, leaves the pelvis at the place, where the vasa femo- 
ralia is located (see Fig. 4), while it covers the posterior part of 
Fig. 4. 
Front-view of the f. transversalis after detaching and folding back 
all layers of the anterior abdominal wall lying before it. 
this bone, i.e. the interior of the pelvic wall, medially behind the 
corpus ossis pubis, we may naturally expect that in one spot or 
other, situated between these two places, the fascia transversa must 
cross the os pubis. Now, this crossing-point could easily be found 
in our anatomical preparation, because at the same place a trans- 
parent spot became at once conspicuous. Moreover this spot was 
less resistant to the pressure of the palpating finger, so that it is 
not out of the bounds of probabilities to state that there, that is 
exactly on the inside of THomson’s ligament, the fascia yields to the 
peritoneum and allows it to force its way into the canal. It should 
be noticed that, if this supposition is correct, the hernial sac must 
enter the canal from the medial side, on the medial side of the 
vessels, consequently precisely at the spot where the septum femorale 
is usually localized, so that my view does not clash with daily 
experience. However, further investigations may throw more light 
upon the matter. 
