1897.] 



PUBLIC DOCUMENT — No. 33. 



99 



The amount of pento.san.s was estimated by both the 

 phenylhydrazin and the phloroglucin methods iu the fol- 

 lowinof substances : — 



Plionylhydra- 

 zin Method 

 (Per Cent.). 



PhloroKliii'iu 



Method 

 (Percent.). 



English hay, , 

 High-grown salt hay, . 

 Branch grass. 

 Low meadow fox grass, 

 Buffalo gluten feed, 

 Lupine seeds. 



21.28 

 25.64 

 24.65 

 27. 9« 

 16.45 

 9.42 



22.60 

 25.74 

 26.43 

 27.91 

 16.00 

 9.64 



With two exceptions the two methods show very closely 

 agreeing results. We propose to still further compare these 

 methods in the near future. The phloroglucin method, on 

 account of its greater simplicity, is much to be preferred. 



