902 



EMBRYOLOGY. 



Fi?. 429. 



BLOOD-VESSELS IN THE LIVEE OE AN EQUINE FCETUS AT MID-TERM. 



A, Umbilical vein ; B, Its anastomoses with the portal vein, c ; D, Ductus venosus ; 

 E, Posterior vena cava. 



Fi?. 430. 



LIVEE OP A LAMB AT BIRTH. 



A, Posterior vena cava ; B, Vena portse ; c, Umbilical vein ; D, Anastomosis of 



the umbilical vein with the vena portee. 



