LESSER CEREBRO-SPINAL LYMPH 129 



more detailed and wholesale olfactory and pituitary outlets, 

 suggest that a kindred excretory phenomenon occurs at 

 the outlets of the salivary glands (Figs. 53, 54), where 

 the more aqueous elements of that fluid, conveyed hither 

 neurilemmically, may be said to afford a basis for the 

 production and discharge of the specific salivary fluids, 

 where their utilisation in the process of digestion is so 

 intimately associated with the glosso-pharyngeal mucosa. 

 It would therefore appear, if these observations are 

 grounded on truth, that a large field for physiological and 



FlG. 54. VIEW OF THE RIGHT SUBMAXILLARY AND SUBLINGUAL GLANDS 



FROM THE INSIDE. (Allen Thomson.) 



Part of the right side of the jaw, divided from the left at the symphysis, remains ; 

 the tongue and its muscles have been removed ; and the mucous membrane of 

 the right side has been dissected off and hooked upwards so as to expose the sub- 

 lingual glands ; .$ m, the larger superficial part of the submaxillary gland ; f, the 

 facial artery passing through it; sm', deep p >rtion prolonged on the inner side 

 of the mylo-hyoid muscle nik\ j/, is placed below the anterior large part of the 

 sublingual gland, with the duct of Bartholin partly shown; si', placed above 

 the hinder small end of the gland, indicates one or two of the ducts perforating 

 the mucous membrane ; d, the papilla, at which the duct of Wharton opens in 

 front behind the incisor teeth ; d', the commencement p the duct ; h, the hyoid 

 bone ; , the gustatory nerve ; close to it is the submaxillary ganglion. 



pathological research lies open, the active occupation and 

 exploitation of which may result in positive additions to 

 human comfort and happiness. 



In this connection we would also draw special attention 

 to the cerebro-spinal lymph excretory regime of the 

 pneumo-gastrics (Fig. 55) in their multitudinous relation- 

 ships with the thoracic and abdominal viscera, where, 

 besides their specific function of systemic innervation of 

 these organs, they also afford great facilities for the 

 functionally useful outflow of that lymph into their 

 textures, and so passively afford channels by which the 

 progress of morbid agencies can find a free passage from 

 the intracranio-spinal areas to the thoracic and abdominal 



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