COMPOSITION OF PLANT AND FKUIT. 



59 



is still in such an imperfect state that physical charac- 

 teristics, odor, color, etc., must for the present be relied 

 upon in the judgment of this important brewers' raw 

 material. 



Moritz and Morris have prepared a summary of 

 26 analyses, which Wolff has published, of the ash of 

 German hops^. The average per cent, of mineral mat- 

 ter is 7.4, the maximum 15.3, and the minimum 5.3. 

 Analyses of the ash showed the following percentage 

 composition: 



Ewell has calculated the following data in regard 

 to the fertilizing constituents contained in the hop 

 plant from analyses contained in the second part of 

 Wolff's "Aschen Analysen:" 



ANALYSES SHOWING THE FERTILIZING CONSTITUENTS CONTAINED IN 

 THE HOP PLANT (female) AND ITS VARIOUS PARTS, STATED IN 

 PARTS PER 100 OF THE AIR-DRIED MATERIAL. 



