FOETAL NUTRITION: THE PLACENTA 443 



an increase of superficies and of secreting epitlielium, and are later 

 concerned in the attachment of the ovum. Tliey ha\'e been recognised 



^nes 



Fio. \±i. — The uterine mucosa of the dog about the twenty-thiid day of 

 pregnancy. (Fi-om Duval's " Le Phicenta des Carnassiers," Jonr. <h' 

 I'Anctt. eiile la yV///.s-., ,1893.) 



mes^ Mesoblast : ti\ ti'oplioblast ; <■, capillary layei- ; </, layer of glandulai' 

 detritus : g, glands of compact layer ; A'/j, dilated glands of spongy layer. 



l.)y all the authorities with tlie exception of K<jhins<.in,i who states that 

 he can find no evidence that any of the crypts are other than the ducts 

 of the uterine glands. At the first and each succeeding pi'ocestrum 

 there is <i marked liypera'mia of the mucosa, and from the rupture of 



Robinson, Hunterian Jjectures, Jn 



nf Aiiiit. ,,,:d /'hi/s., vol. xxxviii., 1904. 



