370 THE CORRESPONDENCE BETWEEN THE [CHAP. 



epiphysis in the shoulder girdle, and by the corresponding 

 supra-iliac epiphysis in the pelvic girdle. The ventral 

 or inferior extremity enters into the formation of the 

 glenoid or the acetabular articular cavity, as the case 

 may be, and joins the coracoid or the ischial element of 

 he girdle. 



The bar, supposed to be in a nearly vertical position, has 

 three surfaces and three borders. In what may be, at least 

 theoretically, considered one stage of their primary position, 

 the surfaces of each bar are (i) Inner or vertebral, turned 

 towards the vertebral column ; (2) Pre-axial, corresponding to 

 the pre-axial line of the limb (Fig. 125, A pf, B is); (3) 

 Post-axial, corresponding to the post-axial line of the limb (A 

 ssf. B gs). The borders are (i) External, in a line with the 

 middle of the dorsal surface of the limb, and terminating 

 below at the upper margin of the glenoid or acetabular cavity 

 (A gb t B ab) ; (2) Antero-internal, terminating below in the 

 acromion or in the pubis (A s t B pb] ; (3) Postero-internal, 

 terminating below in the coracoid, or the ischium, as the 

 case may be (A cb, B zb). 



The correspondence between these parts of the scapula 

 and ilium will be better understood by placing them in 

 a tabular form, the middle column showing the names 

 expressed in the generalized or ideal condition applicable 

 to both in their primitive condition, and the column at each 

 side giving the special terms applied to each part in its 

 variously modified forms. 



