KJELDAHL PROCESS 343 



The amount of protein corresponding to the percentage of 

 total nitrogen estimated in this way may be found by multi- 

 plying the percentage by the factor 6'37-* 



* Assuming the percentage of nitrogen in protein to be, on an average, 15*7, 

 the amount of protein corresponding to a given weight of nitrogen x will be 



x x -522. = x x 6'37 

 15-7 



FURTHER REFERENCES. 



Abderhalden : " Lehrbuch der physiologischen Chemie," Berlin, 1909. 



Barger: "Bases of Biochemical Interest Developed from the Proteins," 

 " Science Progress," 1911, 6, 221. 



Cathcart : " The Physiology of Protein Metabolism," London, 1912. 



Cohnheim : " Chemie der Eiweisskorper," Braunschweig, 1911. 



Ehrlich: " Biochem. Zeitsch.," 1911, 36, 477. 



Ehrlich u. Pistschimuka : " Ber. deut. chem. Gesells.," 1912, 45, 1006. 



Fischer : " Untersuchungen iiber Aminosaiiren, Polypeptide und Protei'ne," 

 Berlin, 1906. 



Halliburton: " Chemistry of the Cell Nucleus," "Science Progress," 1909, 



4. J 97- 



Jones: "Nucleic Acids," London, 1914. 



Puriewitsch : " Biochem. Zeitsch.," 1912, 38, I. 



Plimmer: "The Chemical Constitution of the Proteins," London, 1912 and 



1913- 



Rosenheim : " The Biochemistry of Animals and Plants," " Science Pro- 

 gress," 1908, 2, 676 ; 3, 106. 



Schryver : "The General Characters of the Proteins," London, 1909. 



