PROCESS OF EVOLUTION OF THE UTERUS 13 



this reason they are known as accessory placenta) (placenlce 



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

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



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



a, Ciliated epithelium: h, uterine glands (longitudinal section); r. cross section of 

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



