242 



CIRCULATING FLUIDS 



parated perfectly in this way, was then washed several times with 

 water, dried, and weighed. Its weight amounted to 4 grains. 

 The extractive matters and salts (including loss) may therefore 

 be estimated at '39 of a grain. 



Now since 1000 parts of the defihrinated blood contain 180 

 of solid residue, the blood must contain : 



100000 



II. Analysis of coagulated blood, according to the method of 



Andral and Gavarret. 



a. The serum weighed 1406 grains. 



b. The clot weighed 1228 grains. 



In order to ensure a greater degree of accuracy in my re- 

 sults, I evaporated only a portion of this quantity. 



375-14 grains of the clot when dried, cautiously pulverised, 

 and again heated, left 112*54 grains. Hence 100 parts of the 

 clot contained 30-0 of solid constituents. 449-98 grains of 

 serum left 42-66 of solid residue, which corresponds therefore 

 with 9-55. 



1000 parts of blood consist of 533-8 of serum and 466-2 of 

 clot, of which the serum gives a residue of 50-7, and the clot of 

 139-86 parts. The solid residue of 1000 parts amounts there- 

 fore to 190-56. 



From the residue of the clot we deduct 2-0 for fibrin, and 

 31-0 for the solid residue of the serum contained in it, which 

 must be added to the 50-7. Consequently 1000 parts of blood 

 contain : 



Water 

 Solid residue 



Fibrin 



Solid residue of serum 



Blood-corpuscles 



809-44 

 190-56 



2-00 



79-70 



108-86 



1000-00 



