392 



ARTHUU WILLIAM MEVEH 



fercntiMtioii is but siiglit. Some cells jieiirer the center can be 

 distinctly seen, however. Their outline is polygonal and the 

 protoplasm forms a comparatively narrow band around the 

 large circular or vesicular nuclei some of which contain rather 

 large chromatin granules. Slight condensation is present near 

 the periphery and here the nuclei are somewhat more elongated. 





Fig. 9 Very early anlage of a subcutaneous hemal node. Foetus 18.5 cm. 

 X 920. 



Although the anlage shown in figure 10 which is about 70 /jl 

 largely only shows beginning rarefaction of the peri-nodal mesen- 

 chyme the condensation and differentiation within the nodule 

 nevertheless are somewhat farther advanced than in the pre- 

 vious specimen. This nodule too is wholly non-vascular and 

 seems to be entirely unrelated to vessels. It too was found in 

 the subcutaneous tissues and does not lie far from a consider- 

 ably larger hemal node. In spite of the absence of a definite 

 peri-nodal space the intra-nodal condensation and differentia- 

 tion has proceeded somewhat farther. No definite cell out- 



