462 Anatomy Applied to Medicine and Surgery. 



lection of lymphoid tissue, termed Luschka's tonsil. This 

 ftonsil, when hypertrophied, may cause, in time, pro- 

 nounced symptoms, such as snoring during sleep ; mouth 

 breathing ; such effects of interference with respiration, as 

 malformation of the chest walls, etc. ; mental apathy, etc., 

 and disturbance of hearing from pressure on, or hyper- 

 trophy of the mucous membrane of the Eustachian tube. 

 Hence, the need for the early removal of this tissue. The 

 nerves of the pharynx are derived from the pneumogas- 

 tric (motion) ; from the glosso-pharyngeal (sensation), 

 and from the sympathetic (trophic and vaso-motor). 



