DISTRIBUTION 



21 



fossae which trickles or is sniffed backwards comes in 

 contact with its surface, or is brushed on to it from 

 the superior aspect of the soft palate when that is 

 raised. 



The posterior wall of the oropharyncc presents dis- 



FiG. 3. 



Diagram showing the Circumpharyngeal King of I^yniphoid Tissue 

 (Waldeyer's Ring). 



N. Naso-Pharyngeal Tonsil. 

 F.F. Faucial Tonsils. 



L. Lingual Tonsil. 



Crete lymphoid patches, which may however be re- 

 garded as outlying portions of the nasopnaryngeai 

 tonsil. Some lymphoid tissue is said to occur about the 

 lower end of the tuba audit iva. Lymphoid tissue only 

 occurs very sparsely in the oesophagus (Sobotta). 



