BLOOD. 371 



Arterial. Venous. 



1-049 1-051 John Davy on calves, oxen, sheep, dogs. 



1-053 1-058 Scudamore. Human blood. 



1-0433 1-0487 -j 



1 -0398 1 -0429 V Letellier. Human blood. 



1-0455 1-0531 ) 



1-0461 1-0507 Mean. 



Arterial blood coagulates and putrefies more rapidly than ve- 

 nous blood. 



The crassamentum from arterial blood is more bulky and 

 firm than that from venous blood., The amount of the differ- 

 ence will be seen in the following table : 



Crassamentum. Serum. 



In the cat, . 1163 . 8837 in venous blood. 



1184 . 8816 in arterial. 

 In a sheep, . 861 . 9131 in venous. 

 935 . 9065 in arterial. 

 In a dog, . 970 . 9300 in venous. 



995 . 9005 in arterial. 



From the experiments of Prevost and Dumas, it appears that 

 the proportion of fixed matters to water is greater in arterial 

 than in venous blood. This will be seen by the following ta- 

 ble: 



Arterial blood. Venous blood. 



Fixed matters. Water. Fixed bodies. Water. 



In the sheep, . 17-07 82-93 16-36 83-04 



In the cat, . 17-65 82-35 17-41 82-59 



In the cat, . 19-62 79-38 19-08 80-92 



Mean, 18-11 81-89 17'62 82-38 



The analyses of Lecanu agree with those of Prevost and Du- 

 mas ; but Denis made four analyses of the arterial and venous 

 blood of a man, of a woman, and of a dog, and found the pro- 

 portions of water and fixed matters the very same, both in venous 

 and arterial blood. 



The albumen, salts, and fatty matters, as far as can be infer- 

 red from a considerable number of comparative experiments, ex- 

 ist in the very same proportions in arterial and venous blood. 



Many other comparative experiments on arterial and venous 



