PROCESS OP EVOLDTION OP THE UTERUS 13 



this reason they are known as accessory placenta* (placenlce 



Fig. 4. — Cotyledon of a Pregnant UteruH, cross section, 

 a, Blood vessels ; b, possibly glands, resembling on first sight the mammary glands. 



Fig. 5.— Uterine Wall with Glands, not pregnant. (Mag. 57. ) 



o, Ciliated epithelium; b, uterine glands (longitudinal section); c, cross section of 

 uterine glands ; d, blood vessels ; e, submucous connective tissue. 



