100 The Development of the Lymphatic System in Rabbits 
The cardinal veins of the 14.5 mm. rabbit, Fig. 4, were also shown in 
the earlier paper (Plate 2, Fig. 7). In the plate, the lower portions of 
the subeardinal veins are detached from the rest, and, though colored blue 
ON 
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A TN 
Fic. 3. Rabbit, 14 days, 11 mm., X 13 diams. The structures drawn are 
the same as in Fig. 2, except that in the trunk of the embryo the following 
veins, belonging to the median plane and to the right side, have been added: 
Az., azygos; G., gastric; R. A., renal anastomosis of the subcardinal veins; 
Se., subeardinal; S. M., superior mesenteric; V., vitelline; V. C. J., vena cava 
inferior. 
