210 



CIRCULATING FLUIDS 



The blood was taken from the starved horse, who supplied 

 tlie matter for analyses 3 and 4. 



From these analyses Ave deduce the following conclusions. 

 The blood of the hepatic vein is richer in solid constituents 

 than that of the vena portaj, and consequently than either ar- 

 terial or ordinary venous blood ; it contains less fibrin, fat, 

 globulin, and colouring matter, than the blood of the vena 

 portse ; the ratio of the colouring matter to the globvilin is 

 smaller, and the quantity of albumen larger in the former than 

 in the latter form of blood. 



In consequence of the admixture of the blood of the hepatic 

 artery Avith that of the vena porta? in the capillary system sur- 

 rounding the biliary ducts, and of the catalytic influence of the 

 cells of the liver in the formation and secretion of bile, it is 

 impossible for us to ascertain the relative parts which these two 

 distinct forms of blood play in the production of this important 



