220 



ALBERT KUNTZ 



close proximity with each other that the entire anlage of the 

 sympathetic trunk appears as a continuous cell-column. This 

 cell-column is not of uniform diameter, but in transverse sections 

 traces of it are not wanting in any section in the thoracic and the 

 dorsal region. Fibers are not present as yet either in the anlagen 

 of the sympathetic trunks or in the communicating rami. The 

 sympathetic anlagen are essentially cellular. The cells are 

 closely aggregated and many of them present delicate protoplas- 

 mic processes, or are included in small syncytia. These struc- 

 tures are not very apparent in transverse sections, but in sagittal 

 or frontal sections the anlagen of the sympathetic trunks present 

 the appearance of a loose-meshed cellular network. 



., a 3 supr: 

 rues. ))v.a. 



Fig. A. Diagrammatic transverse section of an embryo 12 mm. in length 

 through the suprarenal bodies, X 50. 



