BLOOD. 



203 



softj and either entirely, or at least its lower surface, dissolves 

 in tlie corn-se of from twelve to twenty-four hours. Schultz 

 further observes that after the blood has been whipt, the cor- 

 puscles sink very quickly ; he ascribes this peculiarity to an 

 excess of colouring matter attached to the capsules of the 

 blood-corpuscles. 



As the blood of the vena portse that I analysed was taken 

 from the same two horses from which I obtained the arterial 

 and venous blood, a fair comparison may be instituted with 

 respect to their differences of constitution. 



1000 parts contained : 



It is only in four respects that the results obtained by a 

 comparison of these two analyses of the blood of the vena 

 portse with arterial blood at all coincide : the former contains 

 less fibrin, more fat, more extractive matter and salts than the 

 latter, and lastly, the proportion of colouring matter to globulin 

 is greater in the former. 



In order to give a better idea of the relative proportions of 

 the colouring matter, I shall quote another analysis of the 



