88 EXPLANATION OF PLATES. 



FIG. 20. From the lumbar portion of the peritoneum parietale of a rabbit 

 suffering from chronic peritonitis. 



M. p. III. 8. 



a. Enlarged branched cells of the ground-substance, provided 

 with a vacuole c, in which lie fat globules d, and young 

 (lymph) cells e. 



I. The nuclei of the branched cells. 



FIG. 21. From the mesentery of ape suffering from chronic peritonitis. 

 M. p. in. 8. 



a. Enlarged branched cells of the ground-substance, filled with 

 fat globules b. The ground-substance M is not represented. 



PLATE V. 



FIG. 22. From the centrum tendineum of a guinea-pig suffering from arti- 

 ficial tuberculosis of the serous membranes (including the centrum 

 tendineum). The preparation had been pencilled from the pleural 

 surface and stained with nitrate of silver. 

 M. p. III. 7. (Tube not drawn out.) 



Showing a patch in pleural serosa (young tubercle), which 

 owes its origin to an intensive proliferation of the branched 

 cells of the lymph- canalicular system. 



At A. the connection of that patch with the lymphatic capillaries, 

 which bend in another layer than that represented in the 

 figure. 



FIG. 23. From a silver-stained omentum of a guinea-pig suffering from 

 chronic infective peritonitis. 



M. p. III. 7. 



F. Ground-substance of the fenestrated portion of the omentum, over 

 the surface of which a villus is projecting freely : A its radix, 

 by which it is connected with the membrane ; B its summit. 



a. Common flat endothelium of the general surface of the villus. 



b. Germinating endothelium. 



c. Vacuolated cells in the ground-substance of the villus. 



d. The same, containing young cells. 



