126 Mr. Thomas Richardson on the Blood. 



The aqueous solution contained no potash, but consisted 

 merely of carbonate, phosphate, and sulphate of soda. 



The salts insoluble in water and alcohol were determined 

 by burning nearly 7000 grains of blood and digesting the 

 residue in dilute muriatic acid. To this acid solution 

 caustic ammonia was added and the precipitate separated 

 by a filter. The solution which passed through was found 

 to contain lime and magnesia, which were estimated in the 

 usual way. The precipitate by caustic ammonia was dried 

 and fused with carbonate of soda. The fused mass was 

 digested for some time with pure water and the insoluble 

 portion separated. To the solution, slight excess of muri- 

 atic acid was added, and then chloride of calcium and 

 caustic ammonia. The precipitate which fell was composed 

 of lime and phosphoric acid. The insoluble portion was 

 by methods sufficiently well known to chemists, found to 

 consist of peroxide of iron, lime, and magnesia, which must 

 have existed in the state of phosphates. 



By calculation it was found that the acids and bases 

 might be combined, as seen in the following analysis of the 

 human blood. 



Water 785*890 



Fibrin 2-120 



Albumen 63-008 



Hematosine 134-780 



Crystalline fatty matter - - - 1-357 



Oily fatty matter 0-808 



Extract of meat and Lactic acid 1-831 

 Albumen and soda - - - - 0956 

 Chloride of sodium - - > _ 5-S41 

 Chloride of potassium -\ ' 

 Carbonate, sulphate, and phos- ) o- ii n 



phate of soda \ 



Subsesquiphosphate of iron - - 1*021 

 Subsesquiphosphate of lime - - 0*056 

 Phosphate of magnesia - - - 0*193 



Peroxide of iron 0*203 



Carbonate of lime - - 

 Carbonate of magnesia 



I - - 0-326 



1000-000 



