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



contained in the light spaces ; and we may further draw the 

 conclusion that each separate lymph corpuscle only temporarily 

 occupies this tissue. In other words, these light spaces only 

 constitute a path by which the corpuscles can be conducted 

 away, whilst the reticulum of the follicular cords constitutes 

 their proper domicile. 



Injections of the lymph and blood vessels of the lymphatic 

 glands furnish evidence, however, of still other and more im- 

 portant differences between the lighter spots and the follicular 

 cords (see fig. 62). The distribution of the bloodvessels, properly 

 speaking, only occurs in the latter ; they alone contain capillary 

 networks, whilst the lighter spaces contain only the larger 

 bloodvessels, which, proceeding from the trabeculse, traverse 

 them in order to reach the follicular cords. On the other hand, 

 injections, whether made by puncture of the gland substance 

 or through the afferent ducts, prove to us that the light spaces 

 represent the true paths pursued by the lymph. They, for the 

 most part, fill with great facility, and the injecting fluid, if 

 composed of thick solutions of gelatine and some coarsely 

 granular colouring material, remains confined and limited to 

 their interior. If, however, the fluid is more watery, and the 

 colouring material very finely divided, it penetrates into the 

 follicular tissue, in all instances clearly entering from the peri- 

 phery. In cases where a very tense natural injection of the 

 mesenteric glands has occurred with chyle, it is easy to demon- 

 strate the presence of chyle granules in the peripheric portions 

 of the follicular tissue ; from whence it follows that the folli- 

 cular cords are not completely excluded from the lymph path. 

 Thus it appears that although the reticulum is very compact 

 near their surface, it will still permit solid corpuscles to pene- 

 trate from the lymph path into the interior of the follicle, and 

 therefore conversely it is probable that material particles lymph 

 cells, for example may pass from them into the lymph path. 



We are thus able to differentiate three separate parts in the 

 tissue of the lymphatic glands : (1) the follicular tissue ; (2) the 

 trabeculse ; and (3) the lymph path. And we must now follow 

 the form and arrangement of these into further detail. The 

 trabeculse are direct processes from the sheath of the lymphatic 

 glands (see fig. 0), and, like this, consist of connective tissue, 



