120 ELEMENTS OF MAMMALIAN ANATOMY. 
Fic. 65b. LactTEALs AND PortaL SysTEM oF Doc. 
a, inferior mesenteric vein; b, gall bladder; c, cecum; d, duodenum; 
e, esophagus; 1, parotid gland; 7, jejunum; /, branches of portal 
vein in liver; lu, branches of trachea and pulmonary artery in the 
lung; m, ilium; ol, colon; p, pancreas; s, spleen; st, stomach; th, 
thoracic duct into which empty the white tubes, the lacteals. 
