ANALYSIS OF BLOOD. 



37 



potash and phosphoric acid; the phosphoric acid is derived only from 

 the burned lecithin ; while the greater part of the sulphuriq acid in 

 the analysis is derived from the burning of the haemoglobin. 



Analysis Of Blood. 1,000 parts, by weight, of HORSE'S BLOOD contain : 



344-18 blood-corpuscles (containing about 128 per cent, of solids). 

 655' 82 plasma (containing about 10 per cent, of solids). 



1,000 parts, by weight, of MOIST BLOOD-CORPUSCLES contain: 



Solids, 367'9 (pig); 400'1 (ox). 

 Water, G32'l 599'9 



The solids are: 



Haemoglobin, . 



Albumin, 



Lecithin, Cholesterin, and other 



Organic Bodies, 



Inorganic Salts, .... 

 POTASH, 



Including 



Chlorine, 



PHOSPHORIC ACID, 

 Soda, . 



Pig. 

 261- 

 86-1 



12-0 



8-9 



5-543 



0-158 



1-504 



2-067 







Ox. 

 280-5 

 107 



7-5 



4-8 



0-747 



0-017 



1-635 



0-703 



2-093 (Bunge). 



24. Chemical Composition of the Colourless 

 Corpuscles. 



Investigations have been made on pus cells, which closely resemble 

 colourless blood-corpuscles. They contain several proteids ; alkali albu- 

 rninate, a proteid which coagulates at 48C., and another resembling 

 myosin, fibrino-plastin, and a coagulating ferment; nuclein in the 

 nuclei (Miescher); perhaps also glycogen (Salomon), lecithin, and 

 extractives. 



100 parts, by weight, of dry PUS contain: 



Earthy Phosphates, . . 0'416 I Potash, . 

 Sodic Phosphate, . . 0'606 I Sodic Chloride, 



0-201 

 0-143 



25. Blood-Plasma and its Relation to Serum. 



The unaltered fluid in which the blood-corpuscles float is called plasma, 

 or liquor sanguinis. This fluid, however, after blood is withdrawn from the 

 vessels, rapidly undergoes a change, owing to the formation of a solid 

 fibrous substance, FIBRIN, which seems to be produced by the coming 

 together of three special substances, the so-called fibrin-factors. After this 

 occurs, the new fluid which remains no longer coagulates spontaneously 

 (it is plasma, minus the fibrin-factors), and is called serum. Apart from 



