QUANTITY AND COMPOSITION OF BLOOD 



973 



where p is the number of c.c. of serum in 100 c.c. of blood ; X (b), \ (a), the 

 conductivity respectively of the blood and seruin (both measured at or reduced 

 to 5 C. and expressed in reciprocal Ohms x 10 8 ). A reciprocal Ohm is the 

 conductivity of a mercury column 1 -063 metres long and 1 square millimetre in 

 section. 



THE GENERAL COMPOSITION OF THE BLOOD 



The general composition of the blood has been determined by 

 Karl Schmidt in man, and by Abderhalden in the horse and bullock. 

 The results are given in the following Tables : 



BLOOD OF A MAN TWENTY-FIVE YEARS OF AGE 



One Thousand Grammes of Blood contain 

 513-02 Blood-Corpuscles. 



Water .... 349-69 

 Substances not vaporising at 



120 



Hsematin . 



' Blood-casein,' &c. 



Inorganic constituents 



Chlorine 



Sulphuric acid . 

 Phosphoric acid . 

 Potassium . 

 Sodium 



Phosphate of lime 

 Phosphate of magnesium 

 Oxygen 



163-33 



7-70 



151-89 



3-74 



0-898^ 



0-031 



0-695 



1-586 



0-241 



0-048 



0-031 



0-206 



486-98 Interstitial Fluid (Plasnia). 



Water .... 439-02 

 Substances not vaporising at 



120 47-96 



Fibrin 



' Albumen,' &c. 



Inorganic constituents. 



3-93 



39-89 



4-14 



(including 0-512 iron) 

 (excluding iron) 



'Chloride of potassium. . 1-887 



Sulphate of potassium . 0-068 



Phosphate of potassium . 1-202 



Phosphate of sodium . . 0-325 



Soda 0-175 



Phosphate of lime . . 0-048 



Phosphate of magnesium . 0-031 



Total 3-736 



Chlorine 

 Sulphuric acid 

 Phosphoric acid . 

 Potassium . 

 Sodium 



Phosphate of lime 

 Phosphate of magnesium 

 Oxygen 



1-722^ 



0-063 



0-071 



0-153 



1-661 



0-145 



0-106 



0-221 



Sulphate of potassium . 0-137 



Chloride of potassium . . 0-175 



Chloride of sodium . . 2-701 



Phosphate of sodium . . 0-132 



Soda 0-746 



Phosphate of lime . . 0-145 



Phosphate of magnesium . 0-106 



4-142 



Total 



Specific Gravity = 1-0599. 



