386 p. KIDD. 



Note on the Lymphatics of Mucous Glands. By P. 

 KiDD, B.A. Oxen. (With Plate XXVI.) 



The subject of this investigation was the mucous glands 

 of the pharynx and oesophagus in the dog. Before proceed- 

 ing to describe our results we shall shortly state what was 

 previously known on this point. 



Teichmann ' Das Saugadersystem,' has described the 

 minute lymphatics of the pharynx and oesophagus, and sub- 

 quent workers on the anatomy of these parts quote Teich- 

 mann as their authority on this point. 



Taking Teichmann, therefore, as the standard authority, 

 we find it stated that in the oesophagus the lymph-capillaries 

 form networks whose branchlets take a longitudinal course. 



Teichmann then goes on to say that in the case of the 

 pharynx, oesophagus, and trachea, the mucous glands and the 

 lymph-capillaries stand in no direct relation. 



We made several injections of the pharynx and oesophagus 

 of dogs recently killed, by the method of puncture. The 

 injections used were Berlin blue and nitrate of silver solution. 



The result of our injections of the oesophagus and pharynx 

 agree closely with Teichmann's statements, and we give a 

 drawing (PL XXVI,fig. 1) of the rough surface-appearance of 

 the injected lymph-capillaries of the pharynx. It will be seen 

 by referring to the drawing that the network which the lymph- 

 capillaries form in the superficial part of the pharynx is very 

 close. 



In the case of the mucous glands our results differ from 

 those of Teichmann, for we find in specimens injected with 

 Berlin blue that the mucous glands lying in the submucosa 

 of the pharynx are provided with a special system of lymph- 

 vessels. A drawing (fig. 2,) is given of one specimen obtained 

 by this method. 



In this as in other instances the mucous glands were seen 

 to be surrounded by broad bands of injection which give off 

 branches here and there. Some of these branches penetrate 

 between the lobules of the glands and follow the individual 

 lobules more or less closely. 



The broad bands of injection represent large lymph-vessels, 

 which form tubes round the mucous glands and give off 

 smaller vessels which follow the course of the individual 

 lobules. In some cases the connection between the glands 

 and lymph- vessels is less close, the glands being loosely sur- 

 rounded by a large lymphatic space or sac. 



