[ 412 ] 



LXIII. Abstract of Chemico-Physiological Researches by 

 Joseph Scherek, M.D. 



[Continued from p. 319, and concluded.] 

 Of Albumen. 

 A. pURE albumen from serum, dried without coagula- 

 *- tion, was digested successively with water at 86° 

 Fahrenheit, alcohol and sether, and then analysed. 



B. Serum of the blood, merely boiled successively with 

 water, alcohol and aether, until nothing more was dissolved. 



C. Albumen from hens' eggs, dried without coagulation, 

 was digested with water at 86°, which dissolved the pure al- 

 bumen (as in A), which was then precipitated by alcohol, and 

 boiled with alcohol and aether. 



These specimens were analysed by combustion with chro- 

 mate of lead, and the nitrogen determined both by Will's 

 method and directly ; the results are, 



A. 

 Carbon 55-461 



Hydrogen . . . 7*201 

 Nitrogen .... 15-673 



Oxygen sulphur"! 21.665 

 and phosphorus J 



100-000 100-000 100-000 



The albumen derived from various morbid secretions was 

 also analysed by the same methods ; from the fluid of hy- 

 drocele and of ordinary ascites; from pus (the ashes of which 

 contained a little iyon) ; from a congestive abscess. The ana- 

 lytical results per cent, were identical with those for normal 

 albumen already given. 



Casein. 



A. Fresh milk being precipitated by alcohol, the curd was 

 taken out and boiled repeatedly in alcohol and aether, until 

 all traces of butter were removed. To deprive it totally of 

 sugar it was then again boiled with water, and finally dried at 

 212° Fahr. 



B. Milk which had become spontaneously somewhat sour, 

 was heated ; it then curdled. The curd was boiled in water, 

 alcohol and aether, as long as anything was dissolved, and 

 then dried at 212°. 



C. Casein prepared by Liebig, by precipitating milk with 

 acetic acid, dissolving the precipitate by carbonate of soda, 

 and again precipitating ; then extracting the butter by boil- 

 ing aether. 



