Chap, xii.] SIMPLE LYMPHATIC GLANDS. 



93 



(c) Lymph-corpuscles completely fill the meshes 

 of the adenoid reticulum. These can, however, 

 be easily shaken out. They are of different sizes ; 

 some the young ones are small cells, with a com- 

 parati vely 



A 



large nucleus ; 

 others the 



ripe ones are 

 larger, have a 

 distinct pro- 

 toplasmic cell 

 body, with one 

 or two nuclei. 

 They all show 

 on a warm 

 stage amo3- 

 boid move- 

 ment, but in 

 the large ones 

 it is much 

 more pro- 

 nounced than 

 in the small 

 ones. 



The capillary blood-vessels supplying the adenoid 

 tissue receive a more or less distinct special investment 

 from the adenoid reticulum ; this is the capillary 

 adventitia. 



123. The adenoid tissue occurs as : 



(1) Diffuse adenoid tissue, without any definite 

 arrangement. This occurs in the subepithelial layer of 

 the mucous membrane of the nasal fossae and trachea, 

 in the mucous membrane of the false vocal cords and 

 the ventricle of the larynx, in the posterior part of 

 the epiglottis, in the soft palate and tonsils, at the 

 root of the tongue, in the pharynx, in the mucosa 

 of the small and large intestine, including the villi 



Fig. 57. Adenoid Eeticulum shaken out ; most of 

 the Lymph-corpuscles are removed. From a 

 Lymphatic Gland. 



a, The reticulum ; c, a capillary blood-vessel. (Atlas.) 



