338 THE LYMPHATIC SYSTEM, BY F. v. RECKLINGHAUSEN. 



are attached, and from this point becomes gradually more and 

 more attenuated, till it loses itself on the lymph path at the 

 borders of the medullary substance. 



This schematic representation of the arrangement of the 

 lymph path corresponds to a fact of no small importance. 

 Teichmann has shown that at certain points, in man especially, 

 near the knee, retia mirabilia frequently occur in the place of 



Fig. 63. 



Fig. 63. Section from the medullary substance of a mesenteric gland 

 of a Dog, after injection with silver, a, rootlets of the vas eflerens, with 

 a lining of epithelium in their interior ; 6, dilatations of the channels, 

 also lined by epithelium, and containing in their interior some gland 

 substance with a follicular cordc ; d, fibrils traversing the lymph path, 

 upon which, again, as at d', an epithelium may be distinguished; e, 

 fibrous intervening substance, which at e' forms trabeculae. Magnified 

 200 diameters. 



true lymphatic glands, differing from the latter in the circum- 

 stance that the lumen of the several branches is clear and free 

 from follicular tissue. Teichmann maintains that the lymphatic 

 glands originate from these by accumulations of lymph cor- 

 puscles, which attach themselves to the interior of the vessels, 

 and here form knots or clumps composed of follicular tissue. 



