384 MANUAL OF HISTOLOGY. 



caused by circumscribed collections of adenoid tissue found in 

 the tunica propria. They resemble glands, in that they gener- 

 ally possess a cavity of variable size which terminates at the 

 surface of the follicle. The mass of adenoid tissue which com- 

 poses the follicle is surrounded by fibres of connective tissue, 

 which are sometimes so compactly woven as to form almost a 

 capsule around it. Sometimes this capsule is wanting, but a 

 gradual transition of the two neighboring forms of tissue is 

 never seen. Above, the adenoid tissue extends as far as the 

 epithelium, so that the papillae of the mucous membrane either 

 disappear altogether or are only to be found occasionally, and 

 then of small size. This adenoid tissue is in all its essentials 

 similar to that found in the tonsils, the vault of the pharynx, 

 and at scattered points in the adjacent tissues. 



The so-called mucous corpuscles of the saliva are probably 

 lymph corpuscles which have escaped from the adenoid tissue 

 just mentioned. 



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ELSASSER, in F. Majendie Lehrbuch der Physiologic, aus dem Franzosischen uber- 

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LOVEN. Beitrage zur Kentniss vom Bau der Geschmackswarzchen der Zunge. Arch, 

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