1906.] 



PLACEXTA IX UNGULATES. 



Text-fiff. 28. 



79 



Sheep. — Detail of cotyledon ary crypt. 

 The columnar epithelium of fig. 7, Plate III., is here seen to pass without a break into 

 the flat or cubical epithelium lining one of the peripheral crypts of the cotyledon. 

 This is taken from the same preparation. 



