BLOOD. 377 



Vauquelin and Segelas, Wollaston and Marcet, who examined 

 diabetes blood in succession, were able to detect any. I think it 

 probable that it exists, but in so small quantity as not to be re- 

 cognizable ; being constantly removed as fast as formed by the 

 action of the kidneys. Just as urea cannot be discovered in 

 healthy blood, though the experiments of Prevost and Dumas show 

 clearly that it must exist in that liquid. Henry and Soubeiran 

 analyzed the blood of a diabetes patient in 1826, and obtained,* 



Globules, . 122-80 



Albumen, , 55-48 



Salts, . 5-57 



Water, . 816-15 



1000-00 



The proportion of globules rather less than in healthy blood. 

 This confirms the previous statement of Nicolas and_Gueudville, 

 that the globules diminish as the disease advances. 



Dr G. O. Rees has also analyzed the serum of blood drawn 

 from a diabetes patient, and obtained 



Water, . 908-50 



Albumen, (containing oxide of iron and phosphate of lime,) 80-35 

 Fatty matters, . . . .0-95 



Diabetes sugar, . . . 1-80 



Animal extract soluble in alcohol and urea, . 2-20 



Albuminate of soda, . . . 0-80 



Alkaline chloride with trace of phosphate, 1 A.AC\ 



Alkaline carbonate, trace of sulphate, / 

 Loss, v . . . 1-00 



1000-00 f 



Dr Rees is the only chemist who has succeeded in finding su- 

 gar in the serum of diabetes blood, and his method of proceeding 

 is not satisfactory. 



6. Blood in Jaundice. Many experiments have been made to 

 determine whether bile exists in the blood of patients labouring 

 under jaundice. But the question seems still undecided. The 

 reason probably is that we are not in possession of any very de- 

 licate test of choleic acid. To decide the point, the best way 

 would be to mix a quantity of fresh bile with new-drawn blood, 

 and to make a comparative set of experiments on this mixture 



* Jour, de Pliarmacie, xii. 320. f Phil. Mag. (3d series), xiii. 395. 



