Plate VII. 

 Diagr.-im of the arteries iu Teras XX. 



a., Aortic arches ; b., Right couuuon carotids ; b'., Left common carotids ; 

 d.. Right siibchivian to A ; e.. Left subchiviaii to B : f.. Subclavian to left 

 portion of anlage of median pair of fore limbs belonging to A ; f'., Right 

 subclavian to portion of anlage of median pair of fore limbs belonging to B ; 

 g., Anlage of median pair of fore limbs ; h.. Right ascending cervicals ; h'., Left 

 ascending cervicals; p., pulmonaries (right); p'., Pulmonaries (left); pa., 

 Posterior aorta ; x.. Placed u]iou the connecting branch betweeen components 

 A and B. 



