394 



ARTHUR WILLIAM MEYER 



Capillaries and arterioles are found williin and near the node 

 and the peripheral sinus is completely filled with erythrocytes 

 and hiiii^hocytes. In spite of the apparently marked advance 

 the capsule shows not the least sign of differentiation, howev^er. 

 The intermixture of erythrocytes within the parenchyma of the 

 node is very slight except at the periphery. There is no unusual 

 indication of the formation of erythrocytes within the node 







►M% 







Fig. 11 Considerably older subcutaneous hemal node. Foetus 32 cm. X 350. 



itself. Yet this node is approximately one-fifth millimeter in 

 diameter, practically spherical in form and except for the absence 

 of a capsule resembles some very small nodes taken from adult 

 sheep and bovines very closely in structure. Vascular and 

 lymphatic plexuses are again absent but single or branched 

 capillaries can be seen to enter the peri-nodal space. As shown 

 in figure 12 arterioles also pass through this space to pass into 



