PLATE XXII 



Plate XXII is from the upper surface of a section 

 through the middle of the sacrum. The plane of the section 

 is 4 cm. anteriorly, and 3.1 cm. posteriorly below that of 

 the last section, so that the anterior margin is 3.2 cm. lower 

 than the posterior. 



The left plica umbilicalis lateralis extends across the 

 corner of the peritonaeal cavity in the section cutting off a 

 small pocket as indicated by the dotted line. 



ii6 



