No. 424.] THE BLOOD FLOW IN LUMBRICUS. 319 










DIAGRAMS TO ILLUSTRATE THE SCHEME OF CIRCULATION 
GIVEN IN THIS PAPER. 
A, cross section of body region ; &, cross section through hearts; C, sketch of 
vessels in somites VII to XIV seen from the side. Arrows indicate the direction 
and vessels supplying it; œ., oesophagus and vessels supplying it; æg., vessels 
supplying cesophageal glands; 7., parietals; 5.7., subneural; s.v., seminal vesicles 
and vessels supplying them; v., ventral vessel; v.i., ventro-intestinals; v.Z., ventro- 
tegumentaries. The figures are unfortunately crowded, owing to the projection 
on one plane of many vessels which lie at differentlevels. The lateral neurals are 
not lettered in A and Z and are not shown in C. 
P 

