76 ANATOMY OF THE LYMPHATIC SYSTEM. 



difference in the lymph -canalicular system is even more striking. 

 If the number of migratory cells is large, then one requires some 

 time before one is able to interpret such spots ; with a high magni- 

 fying power (obj. 8), however, and with somewhat more attention, one 

 can recognise the lacunae of the lymph-can alicular system as being 

 provided only with a few wide canals. Both in the former and in the 

 latter, we can recognise lymphoid corpuscles. We shall also be able 

 to discover here and there in such a dilated canal a smaller or larger 

 protoplasmic mass surrounding a nucleus, and forming a continuity 

 with a protoplasmic process, which can be traced into the correspond- 

 ing lacuna. This nucleated mass of protoplasm appears either as a 

 terminal or as a lateral bud of a cell process. In the same manner, 

 one can find one lymph-canalicular cell or another in which the 

 division of the nucleus has so far advanced that instead of the large 

 ovoid nucleus one comes upon two or three small nuclei, or that the 

 cells of the lymph-canalicular system have a swelling placed on one 

 side, so that the lacuna forms a projection : this swelling is still in 

 distinct connection with the rest of the cell. We have to do here, 

 therefore, with a change of the branched lymph-canalicular cells, 

 as was described of the cornea-corpuscles by Strieker and Norris, 

 and confirmed by Rollett. It is unnecessary for me to state that 

 an exudation both of the colourless and coloured corpuscles had taken 

 place from the blood-vessels, inasmuch as the vessels, especially 

 the small veins, were to be seen sheathed in compact cords of these ; 

 they could be followed even into the lymph-canalicular system. 



The omentum of such rabbits as these proved to be not less in- 

 structive. On the cells of the lymph-canalicular system which pre- 

 sented themselves isolated in the tissue, one could demonstrate on 

 some places exactly the same change as was described on the centrum 

 tendineum, namely, the lacuna being larger, the number of the 

 canals fewer, the canals wider, the cells of the lymph-.canalir^ 1 "" 

 system presenting themselves as granular bodies witV. ^-. -cesses, and 

 their nucleus here and there in the act of division. In the neigh- 

 bourhood of the blood-vessels numerous imVi r.-h.ry cells were met 

 with in the lymph-canalicular system. If % examine carefully the 

 lymphatic nodules, a distinct increase of migratory cells could be 



