Chap, xii.] SIMPLE LYMPHATIC GLANDS. 



93 



(c) Lymph-corpuscles completely fill the meshes 

 of the adenoid reticulum. These can be easily 

 shaken out of the reticulum. They are of dif- 

 ferent sizes ; 

 some the 

 young ones 

 are small cells, 

 with a com- 

 paratively 

 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 amoe- 

 boid move- 

 ment, but in 

 the large ones 

 it is much more pronounced 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 

 grouping or arrangement. This is the case in the sub- 

 epithelial layer of the mucous membrane of the 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 mticosa 

 of the small and large intestine, including the villi 



Ficr. 57. Adenoid Eeticnlum shaken out ; most of 

 the Lymph-corpuscles are removed. From a 

 Lymphatic Gland. 

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



