. VI. NATURE OF ARTERIALIZATION. 127 



170 parts venous } C 12-4 carbonic acid, 



blood of a horse > 18-9 of gas, composed of < 2-5 oxygen, 

 yielded . > (4-0 azote. 



1Q3 parts arterial i I 9-4 carbonic acid, 



blood of a calf > 14-5 of gas, composed of < 3-5 oxygen, 

 yielded . . 3 f 1-6 azote. 



108 parts arterial ) C 7-0 carbonic acid, 



blood of a calf > 12-6 of gas, composed of < 3-0 oxygen, 

 yielded . > I 2-6 azote. 



253 parts venous ) C 10-2 carbonic acid, 



blood of a calf 13-3 of gas, composed of < 1-8 oxygen, 

 yielded . 3 f 1-5 azote. 



140 parts venous ) C 6-1 carbonic acid, 



blood of a calf> 7-7 of gas, composed of < 1-0 oxygen, 

 yielded . . ) f 0-6 azote. 



By taking the mean for these numbers of 100 parts of 

 blood, we find that 



Cubic Centimetres. 



For 100 parts oH C 6.4967 carbonic acid, 



arterial blood > 10-4276 of gas, composed of 2 2-4178 oxygen, 

 yielded . > 1 1-5131 azote. 



For 100 parts of J C 5-5041 carbonic acid, 



venous blood > 7-6825 of gas, composed of< 1-1703 oxygen, 

 yielded . . > f 1-0081 azote. 



It is desirable that the experiments of Magnus should 

 be repeated and extended, principally in order to ascer- 

 tain the absolute quantities of the different gases of the 

 blood. ', >'": 



The following results are also of the highest interest for 

 the theory of respiration : 



1st. There exists in the arterial blood a larger quantity 

 of gas than in venous blood. 



2dly. The quantity of oxygen found in arterial blood is 

 double that which exists in venous blood. 



3dly. The ratio between the oxygen and carbonic acid 



