266 



THE ORGANS 



Fig. i6g. — Transverse Section of Cat's Small Intestine through a Pej'er's Patch. 

 (Stohr.) a, Villi; b, crypts; c, lymph nodules; d, circular muscle layer; e, longitudinal 

 muscle laj'er; /, muscularis mucosae; g, submucosa. 



Solitary 

 lymph nodules 



vX' 



— Peyer's patch 



Fig. 170. — Surface View of Mucous ilembrane of Small Intestine (Ileum), showing 



Peyer's patch (Spalteholz). 



