326 



DR THOMAS W. SHORE. 



mesenteric vein, of which it formed the posterior origin. Blood, 

 no doubt, passed along it in the direction described. The other 

 two abnormal vessels were more remarkable, for apparently they 

 carried blood to the lung. One of them arose by several small 

 tributaries from the rectum, in the way that the hemorrhoidal 

 vein usually arises ; but instead of passing into the mesenteric, 

 curved off in the fold of peritoneum to the lung, the capillaries 



mes. 



Fig. 3. — Connection beween the hepatic portal system and the lung. I, lung ; 

 St., stomach; h.p., hepatic postal vein; (j, gastric vein; ones., mesenteric 

 vein; spL, spleen; red., rectum ; hccm., hsemorrhoidal vein; c, band of 

 peritoneum passing between the mesentery and the lung, and containing 

 three abnormal veins. 



of-which it appeared to join. This vessel was very slender. The 

 third vein arose from the spleen, and, running alongside the 

 abnormal continuation of the mesenteric, traversed the peri- 

 toneal band and reached the lung, where it appeared to end in 

 the capillaries of that organ. The spleen had also a second vein, 

 which joined the mesenteric in the usual way. Thus, in addition 



