THE EARTHWORM 



29 



A IX 9. VIII 



Fig. 6 



A series of diagrams to illustrate the arrangement of the blood-vessels and the course 

 of the circulation in Lumbricus hcrculeus. A. Longitudinal view of the vessels 

 in somites 8, 9 and 10. B. The blood-vessels as seen in transverse section in 

 the same region. C. Longitudinal view of the vessels in the intestinal region. 



ht, 

 com 



nmissural vessels ; af.i, afferent intestinal vessels ; e/.t, efferent intestinal 

 vessels ; ty, typhlosolar vessel ; z, intestine ; ?, oesophagus ; j,j , septa. (From a 

 drawing by Dr W. B. Benham.) 



