APPARATUS FOR PHYSIOLOGICAL USE. 255 



FIG. 2. Diagram of the heart and vessels, with the course of the circulation 

 viewed from behind, so that the proper left of the observer corresponds with 

 the left side of the heart in the diagram. L.A. left auricle ; L. V. left ven- 

 tricle; Ao. aorta; AL. arteries to the upper part of the body; A*, arteries to 

 the lower part of the body ; H. A. hepatic artery, which supplies the liver 

 with part of its blood ; F 1 . veins of the upper part of the body; F2. veins of 

 the lower part of the body; V.P. vena portse; H.V. hepatic vein; V.C.I, in- 

 ferior vena cava; V.C.8. superior vena cava; R.A. right auricle; R.V. right 

 ventricle; P.A. pulmonary artery; Lg. lung; P.F. pulmonary vein; Let, 

 lacteals; Ly. lymphatics; Th.D. thoracic duct; AL alimentary canal; Lr. 

 liver. The arrows indicate the course of the blood, lymph, and chyle. The 

 vessels which contain arterial blood and which were coloured red in the 

 original diagram are here light, while those which carry venous blood and were 

 coloured blue in the diagram are here shaded. 



