THE L YMPHA TICS AND L YMPHA TIC GLANDS. \ 07 



According to Recklinghausen, these passages are directly 

 connected with the lymphatics. He has given them the name 

 of the "juice canals," a denomination which Waldeyer sub- 

 sequently changed into "juice clefts." 



I regret to be obliged to contradict the former investigator. 

 The conservative injection teaches nothing of the kind. I 

 dare to assert this after numerous personal studies, and I ap- 

 peal, besides, to the testimony of distinguished investigators 

 in this department of the technology of injection. I mention 

 the names of Hyrtl, Teichmann, His and Langer. By immod- 

 erate pressure (in normal life it should never be attained), it 

 is true, these chasms or stomata become filled with the colored 

 mass. For an illustration, we refer to the small spaces be- 

 tween the vascular cells of the lymphatics (Fig. 98, b). We 

 have distended them inordinately or, perhaps, forced out a 

 soft substance filling the spaces. 



The normal blood-vessels act in a similar manner. Here, 

 by careful injection, no one fills the "juice clefts" of the 

 connective tissue. No one could show a direct transition of 

 the vessel into these passages. 



Under abnormal conditions of the living body, however, 

 with a vascular tube over-filled with blood, the stomata even 

 here become permeable. If, now, the cadaver be artificially 

 injected, the colored substance penetrates these juice passages 

 (von Winiwarter, Arnold). 



Thus we regard the matter at present. 



Important constituents of the lymphatic apparatus of the 

 mammalia are represented by the lymph-nodes or, as they 

 were earlier less happily named, the lymphatic glands. They 

 interrupt the course of the vessels simply or manifoldly. 

 They are to be denoted as one of the chief forming places of 

 the lymphoid cells. Within them takes place, furthermore, 

 a lively reciprocative action between the lymph and the 

 blood. 



A lymphatic gland may appear globular, oval, or bean-shaped 

 (Fig. 104). In the latter case it presents a so-called hilus 

 most distinctly. When the former has reached a certain size, 



