78 



CULTURE OF THE SUGAR BEET. 



from it with reference to the location of albuminoids and salts have re- 

 ceived full confirmation in his own later work and in that of Professor 

 Joulie. Thus, he stated — 



The former (the translucid zone) appears to contain the higher proportion of min- 

 eral matters. The proportion of chlorides may he eight times as great ; organic, nitric, 

 and phosphoric acids are ahout equivalent, hut sulphuric acid is much more ahundant 

 in the sacchariferous tissue, prohahly on account of the predominance of the albumi- 

 noids. 



The distribution of the albuminous matters and salts is shown in the 

 following statement giving the composition of the translucid and opaque 

 zones : 



Yiolette also found a higher percentage of sugar in the lower portions 

 than in the upper portions of the root, and Joulie found that the tops 

 contained less of nitrogen than the lower extremities. Thus Yiolette, 

 cutting the root in several slices, beginning at the top, found them to 

 contain, respectively, of sugar the following percentages : 



Per cent, of sugar. 



First slice 10.42 



Second slice 10. 54 



Third slice 10.70 



Fourth slice 10.80 



Fifth slice 10.94 



Sixth slice 11.11 



Seventh slice 11.33 



And Joulie found : Percentage of nitrogen 



in normal matter. 



Tops 0.30 0.295 



Extremities of roots 0.33 0.260 



The relation between the nitrogen and the sugar content of beets has 

 been completely confirmed by the further residts obtained by Professor 

 Joulie in the analysis of beets grown under different conditions, as 

 illustrated in the following table : 



From plots having received no nitrogen 



Plots having received 57 pounds nitrogen per acre . 



