BLOOD. 331 



The large amount of fi])rin and of fat is remarkable in Denis's 

 analysis : the 14-5 parts of colouring matters were probably- 

 combined with extractive matter. 



Tiedemann and Gmelin observed that the clot of icteric blood 

 was of the ordinary colour. The clear yellow serum contained 

 biliphsein, and gave, when treated with a small quantity of 

 hydrochloric acid, a hyacinth-red colour, which, in the course 

 of the night, became green ; if an excess of acid was used, a 

 hyacinth-red colour was at once produced, which, in the course 

 of the night, turned to a blue. When treated with a quantity 

 of nitric acid not sufficient to precipitate the albumen, it became 

 of a greenish yeEow colonr ; when treated with an excess of the 

 acid, it gave a green precipitate, which afterwards became blue, 

 and subsequently violet, red, and yellow. 



[Becquerel and Rodier observe that, in icterus, there may 

 be a continued secretion and flow of bile, or there may be 

 perfect retention arising from biliary calculi, &c. 



In the first case, no peculiar modification is observable in the 

 blood, and it is, therefore, unnecessary to quote their analyses ; 

 in the second case, there is an accumulation of cholesterin and 

 of the other fatty matters in the blood. 



The following analysis was made of the blood of a young 

 man, aged 23 years, in whom icterus was developed as a conse- 

 quence of indigestion. There was constipation, and no appear- 

 ance of bile in the faeces. The blood contained, in 1000 parts : 

 Water .... 740-509 



The fatty matters amount to more than double the normal 

 quantity, and consisted of: 



Serolin .... 0-070 



Phosphorized fat . . 0-810 



Cholesterin . . . 0-627 



Saponified fat . . . 2-139 



The fatty acids that enter into the composition of the sapo- 

 nified fat occur in the bile, combined with soda. The salts 

 were normal. 



