BLOOD. 



365 



When a current of hydrogen gas, azotic gas, or even oxygen 

 gas is passed through venous blood, it gives out carbonic acid to 

 the amount at least of one-fifth of the volume of the blood. When 

 venous or arterial blood is kept in the vacuum of an air-pump, 

 it gives out gaseous matter, which was collected and analyzed 

 by Magnus. The following table shows the results obtained : 



Volume. Vol. of 



gases. 



9-8 



Arterial blood of a horse, 125 



Composition. 



5*4 carbonic acid. 



Venous blood of ditto, four ) 

 days after the arterial, j 



Same blood, 



Arterial blood of an old \ 

 horse, / 



Same blood, 



Venous blood of same 

 horse three days after, 



Arterial blood of a calf, 

 Same blood, 



Venous blood of ditto, four 1 

 days after, / 



Same blood, 



205 12-2 



195 14-2 



1-9 oxygen gas. 

 2*5 azotic gas. 



8*8 carbonic acid. 



2*3 oxygen. 

 1-1 azote. 



1OO carbonic acid. 

 2*5 oxygen. 

 1*7 azote. 



130 16-3 10-7 carbonic acid. 



122 10-2 



4*1 oxygen. 

 1*5 azote. 

 7'0 carbonic acid. 

 2 -2 oxygen. 

 1*0 azote. 



170 18-9 12-4 carbonic acid. 



123 14-5 



108 12-6 



2-5 oxygen. 



4*0 azote. 



9*4 carbonic acid. 



3 -5 oxygen. 



1*6 azote. 



7*0 carbonic acid. 



3-0 oxygen. 



2*6 azote. 



153 13-3 10-2 carbonic acid. 



1-8 oxygen. 

 1*3 azote. 



140 7 '7 6'1 carbonic acid. 

 1-0 oxygen. 

 0-6 azote. 



