BULLETIN No. 54. 



U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF CHEMISTRY. 



REPORT 



ON 



AN INVESTIGATION OF ANALYTICAL METHODS FOR DISTINGUISHING 



BETWEEN THE NITROGEN OF PROTE1DS AND THAT OF 



THE SIMPLER AM1DS OR AMIDO-ACIDS. 



BY 



J. W. MALLET, 



Professor of Chemistry, University of Virginia. 



WITH 



A CHAPTER ON THE SEPARATION OF FLESH BASES FROM 

 PROTEID MATTERS BY MEANS OF BROMIN. 



BY 



H. W. WILEY, 



Chief of Division of Chemistry. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1898. 



