NOTCHES AND FISSURES OF THE SPLEEN. 



427 



corresponded to a well-marked notch in the ventral border, and 

 one passed under a little bridge of splenic tissue (fig. 9). 



In man the notches often correspond to forward projections 

 of the attachment of the gastro-splenic omentum, such projec- 



FiG. 9. — Spleen of Polecat. 



tions are shown in the spleen of the green monkey (fig. 4) and 

 in the accompanying human spleen (fig. 10). They do not by 

 any means always correspond to notches, but the coincidence 



Fig. 10. — Human Spleen, showing a process of the gastro-splenic omentum 



towards a notch. 



of the two structures is too frequent to be merely accidental. 

 My impression is that the presence of a large vessel makes the 

 spleen less inclined to bulge at that point and, combined with 

 pressure, determines the site of the future notch. 



