70 THE SALTS AND GASES OF THE SERUM AND PLASMA. [BOOK I. 



III. COMPOSITION OF THE SOLUBLE SALTS YIELDED BY 

 SEBUM OF OX'S BLOOD (SEBTOLI). 



1000 grammes of serum yielded 



Cl 3-270 



Na calculated as in combination with Cl . 2-120 

 !NTa calculated as Na,. 2 O but existing as chloride 1-291 



K calculated as K 2 O 0'224 



P 2 O 5 representing the phosphoric acid actually 



existing in the liquid . . . . 0'025 

 SO 3 representing the sulphuric acid existing in the 



liquid 0-305 



Sertoli arranges the results of the above analysis 

 as follows, so as to represent the probable constitution 

 of the soluble salts of the serum : 



1000 parts of serum yield 



Sodium chloride . . . . 5*39 grms. 



Sodium sulphate . . . . 0-24 



Disodium hydric phosphate (ISra 2 HPO 4 ) 0-05 

 Na, calculated as Na a O (existing as carbonate 



or bicarbonate) . . . . 1-16 



Potassium sulphate . . . . 0'414 



IV. RESULT OF THE ANALYSES OF PELBBAM OF THE CALCIUM AND 

 PHOSPHOBIC ACID EXISTING IN SEBUM (DETEBMINED DIBECTLY). 



1000 grammes of serum yield 



Phosphoric acid corresponding to . 0-179 grms. P 2 O 6 

 Calcium corresponding to . . 0'173ofCaO 



V. RESULTS OF THE ANALYSES OF GEBLACH OF THE 

 MAGNESIUM EXISTING IN SERUM. 



1000 grms. of serum yielded 



(1) Magnesium corresponding to . 0-025 grms. of MgO 



(2) to . 0-027 



THE GASES OF THE PLASMA AND SERUM. 



It will be convenient to postpone a lengthened consideration 

 of this subject to the section which treats of the gases of the blood 

 as a whole, and to the chapter on Respiration. In this place it will 

 suffice to make the following remarks : 



When the blood is heated in a Torricellian vacuum it gives up 

 more than half its volume of a mixture of gases, composed of oxygen, 

 carbonic acid, and nitrogen, which in the blood itself were contained 



