XVIII.] THE LYMPHATIC SYSTEM. 195 



a. Externally the broad fibrous sheath, the cap- 

 sule sending in 



h. Large and conspicuous trabeculae; these 

 run throughout the spleen branching as they 

 go into roundish bundles which are connected 

 with other similar bundles and so form an 

 irregular trabecular network throughout the 

 spleen: the bars of the network cut in all 

 directions will be seen scattered about the 

 section. 



c. In many of the trabeculse largish central 

 spaces the veins^ which may contain blood 

 corpuscles, will be seen, devoid of any proper 

 muscular and connective tissue coats ; in the 

 centre of the section large trabeculse cut 

 'transversely or obliquely will probably be 

 seen containing both arteries and veins; if 

 the section passes through the point of en- 

 trance of the vessels these will be seen run- 

 rdng towards the centre surrounded by tissue 

 continuous with the capsule. 



d. The splenic pulp occupying the spaces of 

 the trabecular network ; it resembles some- 

 what the follicular substance of the lymphatic 

 glands but has a yellowish-mottled appear- 

 ance, in it will be seen roundish masses of 

 tissue, the Malpighian corpuscles more 

 deeply stained than the splenic pulp, the 

 small arteries are surrounded by a variable 

 amount of similar tissue. 



13—2 



