7 6 



THE PHYSIOLOGY OF REPRODUCTION 



by cell division, partly (according to Engelmann J ) by an increase 

 in intercellular substance, and partly by an enlargement of the 

 glands and blood-vessels. According to Lipes, 2 this stage commences 

 as soon as the process of regeneration (following the preceding 











:>, 



- 



Kii;. 7. Section through wall of vagina (lower part) of inoiikt-v. 



K, Epithelium lining cavity ; />, sub-mucous layer : <, musriilar layer ; 

 /. </', ni-rvc ganglia ; e, artci-y : /', fat ct-lls. 



menstrual period) is completed, which is about eighteen days after 

 the cessation of the previous flow. ''During the stage of regenera- 



, ''The Min-ous Membrane of the t'ti-nis. ett-.,' : Amer. .l<mr. 

 t., vol. viii., 1*7.">. 



2 Lipes, "A Study of the Changes orciirriiiLj in the Kmlometriiiiii during 

 the Menstrual ( 'yde," .\H>ii,,,i M,-ilicul Annuls, vol. xxv., 1904. 



