316 SPECIAL HISTOLOGY. 



theless rendered turbid by water ; in part true, pale, uninuclear, 

 round cells, most of which measure from 0003 — O'OO^", with 

 nuclei similar to those found in the free condition, a certain 

 number of larger size (0*005 — 0-007'"), with larger, often dis- 

 tinctly vesicular nuclei and nucleoli, and occasionally a few fat- 

 granules. These morphological elements also, to some extent, 

 correspond entirely with the cells of the lymph and chyle ; a 

 circumstance in itself of no great significance, since no specific 

 character can be assigned to either of them. The similarity 

 of the contents of the alveoli of the lymphatic glands, with 

 those of the follicles of the Peyerian patches, is still further 

 increased by the circumstance, that they are also penetrated by 

 a fine vascular network, as I at least have observed, and have 

 already stated in another place (Mikr. Anat., II, 2, p. 192). 

 For the numerous blood-vessels of the lymphatic glands, which 

 frequently penetrate into the interior at a depressed hilus-\ike 

 spot, are not distributed merely in the septa of connective 

 tissue, as has hitherto been generally asserted, but, as I have 

 seen in Man, also enter the pulp filling the alveoli, where they 

 run freely among the elements, and form a very fine capillary 

 plexus, bearing the closest resemblance to that of the Peyerian 

 follicles, except that in general it is rather wider, and frequently 

 also varicose. 



The most difficult part of the anatomy of these glands is the 

 ascertaining of their connexion with the lymphatic vessels. 

 After the majority of the most recent authors had agreed in 

 the assumption, that the vasa inferentia and efferentia were 

 connected by numerous anastomoses of convoluted and looped 

 vessels, the proper parenchyma of the glands being thus 

 frequently left in the background or altogether forgotten, the 

 number of those has latterly been much increased, who advo- 

 cate the view originally propounded by Malpighi, viz. that the 

 lymphatic glands consist of an aggregation of anastomosing 

 cells, into which the vasa afferentia open, and from which the 

 vasa efferentia proceed; and, in particular, Ludwig and Noll have 

 declared themselves most decidedly in favour of this view. As for 

 myself, it will be apparent from the preceding account, that I 

 am one of those who admit of the existence of a special glan- 

 dular element in the lymphatic glands, and I consequently 

 deny, in the most explicit terms, that they are composed merely 



