1890.] 



A Cyanogen Reaction of Proteids. 



209 



Hydrocyanic 

 acid. 



Violet. 



Rose-red. 



Rose-red. 



Violet. 



Rose-red. 



Yellow. 

 Orange. 



Cyanuric acid. 



Blue. 



Violet. 



Violet. 



Blue. 



Violet. 



Blue. 

 Yellow. 



Biuret. 



Blue. 



Rose-red. 



Rose-red. 



Blue. 



Rose-red. 



Blue. 

 Orange. 



Peptones and 

 albumoses. 



Violet. 



Rose-red. 



Rose-red. 



Violet. 



Rose-red. 



Yellow. 

 Orange. 



Albumins and 

 globulins. 



Blue. 



Violet. 



Violet. 



Blue. 



Violet. 



Blue. 

 Yellow. 



C _i P 



II a 



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