ASSIMILATION 



A Vc 



61 



Pig. 40.— The renal organs viewed from behind. (Prom Martin.) J?, right kid- 

 ney ; A, aorta ; Ar, right renal artery j Vc, inferior vena cava ; Vr, right re- 

 nal vein; U, right ureter ; Vu, bladder ; Ua y commencement of urethra. 



