BULLETIN No. 54. 



U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF CHEMISTRY, -^r--^- 



REPORT 



ON 



AGRICULTURAL ! 

 LIBRARY, 



UNIVER:-:. 



:)--- 



C A LI FOR MI A. 



AN INVESTIGATION OF ANALYTICAL METHODS FOR DISTINGUISHING 



BETWEEN THE NITROGEN OF PROTEIDS AND THAT OF 



THE SIMPLER AMIDS 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. 



