4^4 



Journal of Agricultural Research 



Vol. XIX, No. 9 



INCREASE IN NITROGEN CONTSNT 



The nitrogen determinations are the least satisfactory of the studies 

 made. The samples were so small that microchemical methods had to 



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./o 



/*2r^/#fi5»<H<r / J? ^ ■a ^ e ^ a s /o // y^ /^.s /-* y^ at y^/a yff ^a .^y ^^ ^■s <<^ .e^ 



.yc/xiy y^y^ /S' y& y:^ y» y-» ^o.^y ^^ £'^s^ ^s^^ ^T'^ts .aa ^a>sy y''^ ^ ■^ ^ c J^s <» 

 s/i/jLyysys- ^ ye> yy^AS y^ y^ /»■ y<s /7 /s /s ^a <v ^^ *y ^v ^<fJts^T £» £S jb> ,3/ /^ j 



Fig. is- — Graph showing nitrogen per kernel from date of flowering in 1916 (broken line) and in 1917 



(solid line). 



be used in the early stages of growth. While the material itself was 

 probably fairly uniform, the determinations are not delicate enough to 

 show a uniform progression in percentage. When the percentages are 

 computed on the dry weight to obtain the milligrams of nitrogen per 



