THE BLOOD. 65 



According to HALLIBURTON, the amount of the albumins in 

 comparison with the globulins in cold-blooded animals is not only 

 proportionally smaller, but the total amount of albuminous bodies 

 is smaller than in the warm-blooded animals. 



By a comparative investigation of serum and plasma from the 

 same individual, we find more serum globulin in the one than in 

 the other. The reason for this may lie partly in the fact that in 

 the coagulation of fibrin from the fibrinogen some fibrin globulin is 

 formed which in the quantitative estimation is precipitated with the 

 serum globulin, and partly because the white corpuscles yield serum 

 globulin in the fibrin coagulation (ALEX. SCHMIDT). 



The quantity of mineral bodies in the serum has been determined 

 by many investigators. 



The conclusion drawn from the analyses is that there exists a 

 rather close correspondence between human and animal blood-serum, 

 and it is therefore sufficient to give here the analysis of 0. SCHMIDT 

 of (1) human blood, and of (2) pig- and (3) ox-blood by BUNGE. 

 As in the calcination of lecithin and albumins incorrect results 

 are obtained for the phosphoric and sulphuric acids, these result 

 will not be given below. All figures correspond to 1000 parts of 

 serum. 



123 



K a O 0.392 0.273 0.254 



Na a O 4.462 4.272 4.351 



Cl 3.612 3.611 3.717 



CaO 0.163 0.136 0.126 



MgO 0.101 0.038 0.045 



The amount of NaCl is 6-7 p. m., and it is remarkable that this 

 amount of N~aCl remains almost constant, so that with food con- 

 taining an excess of NaCl it is quickly eliminated by the urine, 

 and with food poor in chlorides the amount in the blood first 

 decreases, but increases after taking chlorides from the tissues. 

 The secretion of chlorides by the urine is thereby diminished. 



The amount of phosphoric acid, calculated as Na 2 HP0 4 , in the 

 serum freed from lecithin has been determined as 0.02-0.09 p. m. 

 by SERTOLI and MROCZKOWSKI in different varieties of serum. The 

 small amount of iron sometimes found in the serum probably origi~ 

 nates from a contamination with the blood-coloring matters. 



